42313212 has 24 divisors (see below), whose sum is σ = 109701200. Its totient is φ = 14104368.

The previous prime is 42313147. The next prime is 42313223. The reversal of 42313212 is 21231324.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195787 + ... + 196002.

Almost surely, 2^42313212 is an apocalyptic number.

It is an amenable number.

42313212 is an abundant number, since it is smaller than the sum of its proper divisors (67387988).

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

42313212 is a wasteful number, since it uses less digits than its factorization.

42313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391802 (or 391794 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 42313212 is about 6504.8606441645. The cubic root of 42313212 is about 348.4645994340.

Adding to 42313212 its reverse (21231324), we get a palindrome (63544536).

The spelling of 42313212 in words is "forty-two million, three hundred thirteen thousand, two hundred twelve".