252126389 has 4 divisors (see below), whose sum is σ = 252359424. Its totient is φ = 251893356.

The previous prime is 252126349. The next prime is 252126449. The reversal of 252126389 is 983621252.

252126389 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252126389 - 2¹² = 252122293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252126349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114887 + ... + 117060.

It is an arithmetic number, because the mean of its divisors is an integer number (63089856).

Almost surely, 2^252126389 is an apocalyptic number.

It is an amenable number.

252126389 is a deficient number, since it is larger than the sum of its proper divisors (233035).

252126389 is a wasteful number, since it uses less digits than its factorization.

252126389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233034.

The product of its digits is 51840, while the sum is 38.

The square root of 252126389 is about 15878.4882466814. The cubic root of 252126389 is about 631.7415397850.

The spelling of 252126389 in words is "two hundred fifty-two million, one hundred twenty-six thousand, three hundred eighty-nine".