240538957 has 2 divisors, whose sum is σ = 240538958. Its totient is φ = 240538956.

The previous prime is 240538939. The next prime is 240538979. The reversal of 240538957 is 759835042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153041641 + 87497316 = 12371^2 + 9354^2 .

It is a cyclic number.

It is not a de Polignac number, because 240538957 - 2²³ = 232150349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240538657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120269478 + 120269479.

It is an arithmetic number, because the mean of its divisors is an integer number (120269479).

Almost surely, 2^240538957 is an apocalyptic number.

It is an amenable number.

240538957 is a deficient number, since it is larger than the sum of its proper divisors (1).

240538957 is an equidigital number, since it uses as much as digits as its factorization.

240538957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 240538957 is about 15509.3183925020. The cubic root of 240538957 is about 621.9113380515.

The spelling of 240538957 in words is "two hundred forty million, five hundred thirty-eight thousand, nine hundred fifty-seven".