12757507442 has 8 divisors (see below), whose sum is σ = 19139706732. Its totient is φ = 6377605200.

The previous prime is 12757507423. The next prime is 12757507457. The reversal of 12757507442 is 24470575721.

12757507442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12750700561 + 6806881 = 112919^2 + 2609^2 .

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

It is a super-2 number, since 2×12757507442² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12757507393 and 12757507402.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 560309 + ... + 582632.

Almost surely, 2^12757507442 is an apocalyptic number.

12757507442 is a deficient number, since it is larger than the sum of its proper divisors (6382199290).

12757507442 is a wasteful number, since it uses less digits than its factorization.

12757507442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148524.

The product of its (nonzero) digits is 548800, while the sum is 44.

The spelling of 12757507442 in words is "twelve billion, seven hundred fifty-seven million, five hundred seven thousand, four hundred forty-two".