213551242 has 16 divisors (see below), whose sum is σ = 326218752. Its totient is φ = 104829760.

The previous prime is 213551237. The next prime is 213551321. The reversal of 213551242 is 242155312.

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, 19767 + ... + 28597.

It is an arithmetic number, because the mean of its divisors is an integer number (20388672).

Almost surely, 2^213551242 is an apocalyptic number.

213551242 is a deficient number, since it is larger than the sum of its proper divisors (112667510).

213551242 is a wasteful number, since it uses less digits than its factorization.

213551242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9053.

The product of its digits is 2400, while the sum is 25.

The square root of 213551242 is about 14613.3925561452. The cubic root of 213551242 is about 597.7240088385.

The spelling of 213551242 in words is "two hundred thirteen million, five hundred fifty-one thousand, two hundred forty-two".