42170874 has 32 divisors (see below), whose sum is σ = 86961600. Its totient is φ = 13625472.

The previous prime is 42170867. The next prime is 42170893. The reversal of 42170874 is 47807124.

It is a super-2 number, since 2×42170874² = 3556765227847752, which contains 22 as substring.

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, 37894 + ... + 38990.

It is an arithmetic number, because the mean of its divisors is an integer number (2717550).

Almost surely, 2^42170874 is an apocalyptic number.

42170874 is an abundant number, since it is smaller than the sum of its proper divisors (44790726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42170874 is a wasteful number, since it uses less digits than its factorization.

42170874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 42170874 is about 6493.9105321832. The cubic root of 42170874 is about 348.0734255160.

Adding to 42170874 its reverse (47807124), we get a palindrome (89977998).

The spelling of 42170874 in words is "forty-two million, one hundred seventy thousand, eight hundred seventy-four".