213432242 has 4 divisors (see below), whose sum is σ = 320148366. Its totient is φ = 106716120.

The previous prime is 213432239. The next prime is 213432277. The reversal of 213432242 is 242234312.

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., 193460281 + 19971961 = 13909^2 + 4469^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53358059 + ... + 53358062.

Almost surely, 2^213432242 is an apocalyptic number.

213432242 is a deficient number, since it is larger than the sum of its proper divisors (106716124).

213432242 is a wasteful number, since it uses less digits than its factorization.

213432242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106716123.

The product of its digits is 2304, while the sum is 23.

The square root of 213432242 is about 14609.3203811813. The cubic root of 213432242 is about 597.6129623084.

Adding to 213432242 its reverse (242234312), we get a palindrome (455666554).

The spelling of 213432242 in words is "two hundred thirteen million, four hundred thirty-two thousand, two hundred forty-two".