213242394 has 64 divisors (see below), whose sum is σ = 459406080. Its totient is φ = 65856000.

The previous prime is 213242387. The next prime is 213242401. The reversal of 213242394 is 493242312.

213242394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (213242387) and next prime (213242401).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506304 + ... + 506724.

It is an arithmetic number, because the mean of its divisors is an integer number (7178220).

Almost surely, 2^213242394 is an apocalyptic number.

213242394 is an abundant number, since it is smaller than the sum of its proper divisors (246163686).

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

213242394 is a wasteful number, since it uses less digits than its factorization.

213242394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567.

The product of its digits is 10368, while the sum is 30.

The square root of 213242394 is about 14602.8214397081. The cubic root of 213242394 is about 597.4357174823.

The spelling of 213242394 in words is "two hundred thirteen million, two hundred forty-two thousand, three hundred ninety-four".