42213234 has 64 divisors (see below), whose sum is σ = 102021120. Its totient is φ = 11383680.

The previous prime is 42213233. The next prime is 42213271. The reversal of 42213234 is 43231224.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42213234.

It is not an unprimeable number, because it can be changed into a prime (42213233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85729 + ... + 86219.

It is an arithmetic number, because the mean of its divisors is an integer number (1594080).

Almost surely, 2^42213234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42213234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51010560).

42213234 is an abundant number, since it is smaller than the sum of its proper divisors (59807886).

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

42213234 is a wasteful number, since it uses less digits than its factorization.

42213234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615.

The product of its digits is 1152, while the sum is 21.

The square root of 42213234 is about 6497.1712306203. The cubic root of 42213234 is about 348.1899313317.

Adding to 42213234 its reverse (43231224), we get a palindrome (85444458).

The spelling of 42213234 in words is "forty-two million, two hundred thirteen thousand, two hundred thirty-four".