213453242 has 4 divisors (see below), whose sum is σ = 320179866. Its totient is φ = 106726620.

The previous prime is 213453217. The next prime is 213453263. The reversal of 213453242 is 242354312.

213453242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 211382521 + 2070721 = 14539^2 + 1439^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53363309 + ... + 53363312.

Almost surely, 2^213453242 is an apocalyptic number.

213453242 is a deficient number, since it is larger than the sum of its proper divisors (106726624).

213453242 is a wasteful number, since it uses less digits than its factorization.

213453242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106726623.

The product of its digits is 5760, while the sum is 26.

The square root of 213453242 is about 14610.0390827677. The cubic root of 213453242 is about 597.6325617537.

The spelling of 213453242 in words is "two hundred thirteen million, four hundred fifty-three thousand, two hundred forty-two".