12102257042 has 18 divisors (see below), whose sum is σ = 18349869447. Its totient is φ = 5986330284.

The previous prime is 12102256993. The next prime is 12102257087. The reversal of 12102257042 is 24075220121.

It can be written as a sum of positive squares in only one way, i.e., 6051128521 + 6051128521 = 77789^2 + 77789^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=77789.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16646483 + ... + 16647209.

Almost surely, 2^12102257042 is an apocalyptic number.

12102257042 is a deficient number, since it is larger than the sum of its proper divisors (6247612405).

12102257042 is an frugal number, since it uses more digits than its factorization.

12102257042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

Adding to 12102257042 its reverse (24075220121), we get a palindrome (36177477163).

The spelling of 12102257042 in words is "twelve billion, one hundred two million, two hundred fifty-seven thousand, forty-two".