240995021 has 2 divisors, whose sum is σ = 240995022. Its totient is φ = 240995020.

The previous prime is 240994981. The next prime is 240995033. The reversal of 240995021 is 120599042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124657225 + 116337796 = 11165^2 + 10786^2 .

It is a cyclic number.

It is not a de Polignac number, because 240995021 - 2¹⁴ = 240978637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240991021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120497510 + 120497511.

It is an arithmetic number, because the mean of its divisors is an integer number (120497511).

Almost surely, 2^240995021 is an apocalyptic number.

It is an amenable number.

240995021 is a deficient number, since it is larger than the sum of its proper divisors (1).

240995021 is an equidigital number, since it uses as much as digits as its factorization.

240995021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 240995021 is about 15524.0143326396. The cubic root of 240995021 is about 622.3041397120.

The spelling of 240995021 in words is "two hundred forty million, nine hundred ninety-five thousand, twenty-one".