240259457 has 2 divisors, whose sum is σ = 240259458. Its totient is φ = 240259456.

The previous prime is 240259433. The next prime is 240259501. The reversal of 240259457 is 754952042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124567921 + 115691536 = 11161^2 + 10756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240259457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240259457.

It is not a weakly prime, because it can be changed into another prime (240259417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120129728 + 120129729.

It is an arithmetic number, because the mean of its divisors is an integer number (120129729).

Almost surely, 2^240259457 is an apocalyptic number.

It is an amenable number.

240259457 is a deficient number, since it is larger than the sum of its proper divisors (1).

240259457 is an equidigital number, since it uses as much as digits as its factorization.

240259457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 240259457 is about 15500.3050615141. The cubic root of 240259457 is about 621.6703631023.

The spelling of 240259457 in words is "two hundred forty million, two hundred fifty-nine thousand, four hundred fifty-seven".