| Base | Representation |
|---|---|
| bin | 101010111111000… |
| … | …1001011111001000 |
| 3 | 10201112001020021220 |
| 4 | 1111332021133020 |
| 5 | 10423220331034 |
| 6 | 355042402040 |
| 7 | 50512550016 |
| oct | 12576113710 |
| 9 | 3645036256 |
| 10 | 1442355144 |
| 11 | 68019884a |
| 12 | 343060320 |
| 13 | 19ca8b2a9 |
| 14 | d97b98b6 |
| 15 | 8695e749 |
| hex | 55f897c8 |
1442355144 has 128 divisors (see below), whose sum is σ = 3780691200. Its totient is φ = 458265600.
The previous prime is 1442355143. The next prime is 1442355169. The reversal of 1442355144 is 4415532441.
1442355144 = 36912 + 36922 + ... + 37932.
It is a happy number.
It is a super-2 number, since 2×14423551442 = 4160776722846521472, which contains 22 as substring.
It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.
It is not an unprimeable number, because it can be changed into a prime (1442355143) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13232562 + ... + 13232670.
It is an arithmetic number, because the mean of its divisors is an integer number (29536650).
Almost surely, 21442355144 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1442355144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890345600).
1442355144 is an abundant number, since it is smaller than the sum of its proper divisors (2338336056).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1442355144 is a wasteful number, since it uses less digits than its factorization.
1442355144 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 375 (or 371 counting only the distinct ones).
The product of its digits is 38400, while the sum is 33.
The square root of 1442355144 is about 37978.3509910581. The cubic root of 1442355144 is about 1129.8585313800.
Adding to 1442355144 its reverse (4415532441), we get a palindrome (5857887585).
The spelling of 1442355144 in words is "one billion, four hundred forty-two million, three hundred fifty-five thousand, one hundred forty-four".
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