240862621 has 2 divisors, whose sum is σ = 240862622. Its totient is φ = 240862620.

The previous prime is 240862571. The next prime is 240862631. The reversal of 240862621 is 126268042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167417721 + 73444900 = 12939^2 + 8570^2 .

It is a cyclic number.

It is not a de Polignac number, because 240862621 - 2⁷ = 240862493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240862631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120431310 + 120431311.

It is an arithmetic number, because the mean of its divisors is an integer number (120431311).

Almost surely, 2^240862621 is an apocalyptic number.

It is an amenable number.

240862621 is a deficient number, since it is larger than the sum of its proper divisors (1).

240862621 is an equidigital number, since it uses as much as digits as its factorization.

240862621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 240862621 is about 15519.7493858632. The cubic root of 240862621 is about 622.1901564978.

The spelling of 240862621 in words is "two hundred forty million, eight hundred sixty-two thousand, six hundred twenty-one".