15872042 has 8 divisors (see below), whose sum is σ = 23844132. Its totient is φ = 7924000.

The previous prime is 15872039. The next prime is 15872057. The reversal of 15872042 is 24027851.

It can be written as a sum of positive squares in 2 ways, for example, as 15832441 + 39601 = 3979^2 + 199^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 15871996 and 15872014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4259 + ... + 7062.

Almost surely, 2^15872042 is an apocalyptic number.

15872042 is a deficient number, since it is larger than the sum of its proper divisors (7972090).

15872042 is a wasteful number, since it uses less digits than its factorization.

15872042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12024.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 15872042 is about 3983.9731424798. The cubic root of 15872042 is about 251.3106738611.

Adding to 15872042 its reverse (24027851), we get a palindrome (39899893).

The spelling of 15872042 in words is "fifteen million, eight hundred seventy-two thousand, forty-two".