213497942 has 24 divisors (see below), whose sum is σ = 379073136. Its totient is φ = 88339104.

The previous prime is 213497909. The next prime is 213497953. The reversal of 213497942 is 249794312.

It is a self number, because there is not a number n which added to its sum of digits gives 213497942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2708 + ... + 20840.

It is an arithmetic number, because the mean of its divisors is an integer number (15794714).

Almost surely, 2^213497942 is an apocalyptic number.

213497942 is a deficient number, since it is larger than the sum of its proper divisors (165575194).

213497942 is a wasteful number, since it uses less digits than its factorization.

213497942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18200 (or 18171 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 213497942 is about 14611.5687727225. The cubic root of 213497942 is about 597.6742762930.

The spelling of 213497942 in words is "two hundred thirteen million, four hundred ninety-seven thousand, nine hundred forty-two".