240463721 has 2 divisors, whose sum is σ = 240463722. Its totient is φ = 240463720.

The previous prime is 240463711. The next prime is 240463733. The reversal of 240463721 is 127364042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139240000 + 101223721 = 11800^2 + 10061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240463721 is a prime.

It is a super-2 number, since 2×240463721² = 115645602234331682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240463711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120231860 + 120231861.

It is an arithmetic number, because the mean of its divisors is an integer number (120231861).

Almost surely, 2^240463721 is an apocalyptic number.

It is an amenable number.

240463721 is a deficient number, since it is larger than the sum of its proper divisors (1).

240463721 is an equidigital number, since it uses as much as digits as its factorization.

240463721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 240463721 is about 15506.8926932510. The cubic root of 240463721 is about 621.8464906200.

The spelling of 240463721 in words is "two hundred forty million, four hundred sixty-three thousand, seven hundred twenty-one".