252420907 has 2 divisors, whose sum is σ = 252420908. Its totient is φ = 252420906.

The previous prime is 252420899. The next prime is 252420923. The reversal of 252420907 is 709024252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252420907 - 2³ = 252420899 is a prime.

It is not a weakly prime, because it can be changed into another prime (252420977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126210453 + 126210454.

It is an arithmetic number, because the mean of its divisors is an integer number (126210454).

Almost surely, 2^252420907 is an apocalyptic number.

252420907 is a deficient number, since it is larger than the sum of its proper divisors (1).

252420907 is an equidigital number, since it uses as much as digits as its factorization.

252420907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 252420907 is about 15887.7596595618. The cubic root of 252420907 is about 631.9874308174.

The spelling of 252420907 in words is "two hundred fifty-two million, four hundred twenty thousand, nine hundred seven".