213211042 has 16 divisors (see below), whose sum is σ = 369414432. Its totient is φ = 91213120.

The previous prime is 213211039. The next prime is 213211051. The reversal of 213211042 is 240112312.

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, 284668 + ... + 285415.

It is an arithmetic number, because the mean of its divisors is an integer number (23088402).

Almost surely, 2^213211042 is an apocalyptic number.

213211042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213211042 is a deficient number, since it is larger than the sum of its proper divisors (156203390).

213211042 is a wasteful number, since it uses less digits than its factorization.

213211042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570113.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 213211042 is about 14601.7479090690. The cubic root of 213211042 is about 597.4064366839.

Adding to 213211042 its reverse (240112312), we get a palindrome (453323354).

The spelling of 213211042 in words is "two hundred thirteen million, two hundred eleven thousand, forty-two".