252230138 has 4 divisors (see below), whose sum is σ = 378345210. Its totient is φ = 126115068.

The previous prime is 252230119. The next prime is 252230141. The reversal of 252230138 is 831032252.

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., 222994489 + 29235649 = 14933^2 + 5407^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63057533 + ... + 63057536.

Almost surely, 2^252230138 is an apocalyptic number.

252230138 is a deficient number, since it is larger than the sum of its proper divisors (126115072).

252230138 is a wasteful number, since it uses less digits than its factorization.

252230138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126115071.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 252230138 is about 15881.7548778465. The cubic root of 252230138 is about 631.8281809404.

The spelling of 252230138 in words is "two hundred fifty-two million, two hundred thirty thousand, one hundred thirty-eight".