15870530042 has 32 divisors (see below), whose sum is σ = 25174769664. Its totient is φ = 7491884400.

The previous prime is 15870530023. The next prime is 15870530063. The reversal of 15870530042 is 24003507851.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15870529984 and 15870530011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2639003 + ... + 2645009.

It is an arithmetic number, because the mean of its divisors is an integer number (786711552).

Almost surely, 2^15870530042 is an apocalyptic number.

15870530042 is a deficient number, since it is larger than the sum of its proper divisors (9304239622).

15870530042 is a wasteful number, since it uses less digits than its factorization.

15870530042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 15870530042 in words is "fifteen billion, eight hundred seventy million, five hundred thirty thousand, forty-two".