213894342 has 24 divisors (see below), whose sum is σ = 483588144. Its totient is φ = 68198064.

The previous prime is 213894313. The next prime is 213894367. The reversal of 213894342 is 243498312.

213894342 is a `hidden beast` number, since 213 + 8 + 9 + 434 + 2 = 666.

It is a super-2 number, since 2×213894342² = 91501579079225928, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 213894297 and 213894306.

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, 257913 + ... + 258740.

It is an arithmetic number, because the mean of its divisors is an integer number (20149506).

Almost surely, 2^213894342 is an apocalyptic number.

213894342 is an abundant number, since it is smaller than the sum of its proper divisors (269693802).

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

213894342 is a wasteful number, since it uses less digits than its factorization.

213894342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516684 (or 516681 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 213894342 is about 14625.1270763710. The cubic root of 213894342 is about 598.0439466888.

The spelling of 213894342 in words is "two hundred thirteen million, eight hundred ninety-four thousand, three hundred forty-two".