252042389 has 2 divisors, whose sum is σ = 252042390. Its totient is φ = 252042388.

The previous prime is 252042377. The next prime is 252042397. The reversal of 252042389 is 983240252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171348100 + 80694289 = 13090^2 + 8983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252042389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252002389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126021194 + 126021195.

It is an arithmetic number, because the mean of its divisors is an integer number (126021195).

Almost surely, 2^252042389 is an apocalyptic number.

It is an amenable number.

252042389 is a deficient number, since it is larger than the sum of its proper divisors (1).

252042389 is an equidigital number, since it uses as much as digits as its factorization.

252042389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 252042389 is about 15875.8429382506. The cubic root of 252042389 is about 631.6713736752.

The spelling of 252042389 in words is "two hundred fifty-two million, forty-two thousand, three hundred eighty-nine".