42172260 has 72 divisors (see below), whose sum is σ = 127895040. Its totient is φ = 10378368.

The previous prime is 42172219. The next prime is 42172297. The reversal of 42172260 is 6227124.

It is a self number, because there is not a number n which added to its sum of digits gives 42172260.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8061 + ... + 12219.

It is an arithmetic number, because the mean of its divisors is an integer number (1776320).

Almost surely, 2^42172260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42172260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63947520).

42172260 is an abundant number, since it is smaller than the sum of its proper divisors (85722780).

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

42172260 is a wasteful number, since it uses less digits than its factorization.

42172260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4197 (or 4182 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 42172260 is about 6494.0172466663. The cubic root of 42172260 is about 348.0772387678.

Adding to 42172260 its reverse (6227124), we get a palindrome (48399384).

The spelling of 42172260 in words is "forty-two million, one hundred seventy-two thousand, two hundred sixty".