213572742 has 32 divisors (see below), whose sum is σ = 434779008. Its totient is φ = 69926976.

The previous prime is 213572741. The next prime is 213572753. The reversal of 213572742 is 247275312.

It is a super-2 number, since 2×213572742² = 91226632250797128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213572741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123093 + ... + 124815.

It is an arithmetic number, because the mean of its divisors is an integer number (13586844).

Almost surely, 2^213572742 is an apocalyptic number.

213572742 is an abundant number, since it is smaller than the sum of its proper divisors (221206266).

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

213572742 is a wasteful number, since it uses less digits than its factorization.

213572742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084.

The product of its digits is 23520, while the sum is 33.

The square root of 213572742 is about 14614.1281642115. The cubic root of 213572742 is about 597.7440674668.

The spelling of 213572742 in words is "two hundred thirteen million, five hundred seventy-two thousand, seven hundred forty-two".