42170232 has 96 divisors (see below), whose sum is σ = 117661680. Its totient is φ = 12579840.

The previous prime is 42170231. The next prime is 42170239. The reversal of 42170232 is 23207124.

It is a junction number, because it is equal to n+sod(n) for n = 42170199 and 42170208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42170231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149932 + ... + 150212.

Almost surely, 2^42170232 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 42170232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58830840).

42170232 is an abundant number, since it is smaller than the sum of its proper divisors (75491448).

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

42170232 is a wasteful number, since it uses less digits than its factorization.

42170232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 42170232 is about 6493.8611010708. The cubic root of 42170232 is about 348.0716591763.

Adding to 42170232 its reverse (23207124), we get a palindrome (65377356).

The spelling of 42170232 in words is "forty-two million, one hundred seventy thousand, two hundred thirty-two".