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1442544223 = 15121314483
BaseRepresentation
bin101010111111011…
…0111101001011111
310201112101211122211
41111332313221133
510423242403343
6355050421251
750514265201
oct12576675137
93645354584
101442544223
1168030790a
12343131827
1319cb26383
14d9828771
158699a79d
hex55fb7a5f

1442544223 has 8 divisors (see below), whose sum is σ = 1453102976. Its totient is φ = 1431999000.

The previous prime is 1442544221. The next prime is 1442544247. The reversal of 1442544223 is 3224452441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1442544223 - 21 = 1442544221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442544221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319540 + ... + 324022.

It is an arithmetic number, because the mean of its divisors is an integer number (181637872).

Almost surely, 21442544223 is an apocalyptic number.

1442544223 is a deficient number, since it is larger than the sum of its proper divisors (10558753).

1442544223 is a wasteful number, since it uses less digits than its factorization.

1442544223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6765.

The product of its digits is 30720, while the sum is 31.

The square root of 1442544223 is about 37980.8402092423. The cubic root of 1442544223 is about 1129.9079004479.

Adding to 1442544223 its reverse (3224452441), we get a palindrome (4666996664).

The spelling of 1442544223 in words is "one billion, four hundred forty-two million, five hundred forty-four thousand, two hundred twenty-three".

Divisors: 1 151 2131 4483 321781 676933 9553273 1442544223