Base | Representation |
---|---|
bin | 101010010101001… |
… | …1001100111111000 |
3 | 10122222201212001210 |
4 | 1110222121213320 |
5 | 10402110314034 |
6 | 352540043120 |
7 | 50125132131 |
oct | 12452314770 |
9 | 3588655053 |
10 | 1420401144 |
11 | 669863448 |
12 | 3378334a0 |
13 | 198372666 |
14 | d6902c88 |
15 | 84a748e9 |
hex | 54a999f8 |
1420401144 has 32 divisors (see below), whose sum is σ = 3551991120. Its totient is φ = 473335296.
The previous prime is 1420401131. The next prime is 1420401163. The reversal of 1420401144 is 4411040241.
It is a self number, because there is not a number n which added to its sum of digits gives 1420401144.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121542 + ... + 132714.
Almost surely, 21420401144 is an apocalyptic number.
It is an amenable number.
1420401144 is an abundant number, since it is smaller than the sum of its proper divisors (2131589976).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1420401144 is a wasteful number, since it uses less digits than its factorization.
1420401144 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16479 (or 16475 counting only the distinct ones).
The product of its (nonzero) digits is 512, while the sum is 21.
The square root of 1420401144 is about 37688.2096152099. The cubic root of 1420401144 is about 1124.0966955393.
Adding to 1420401144 its reverse (4411040241), we get a palindrome (5831441385).
The spelling of 1420401144 in words is "one billion, four hundred twenty million, four hundred one thousand, one hundred forty-four".
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