172315042 has 16 divisors (see below), whose sum is σ = 269438400. Its totient is φ = 82547920.

The previous prime is 172315001. The next prime is 172315063. The reversal of 172315042 is 240513271.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 172314998 and 172315016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3742 + ... + 18937.

It is an arithmetic number, because the mean of its divisors is an integer number (16839900).

Almost surely, 2^172315042 is an apocalyptic number.

172315042 is a deficient number, since it is larger than the sum of its proper divisors (97123358).

172315042 is a wasteful number, since it uses less digits than its factorization.

172315042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22841.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 172315042 is about 13126.8824173907. The cubic root of 172315042 is about 556.4691126511.

The spelling of 172315042 in words is "one hundred seventy-two million, three hundred fifteen thousand, forty-two".