240377021 has 2 divisors, whose sum is σ = 240377022. Its totient is φ = 240377020.

The previous prime is 240377017. The next prime is 240377041. The reversal of 240377021 is 120773042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239940100 + 436921 = 15490^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 240377021 - 2² = 240377017 is a prime.

It is a super-2 number, since 2×240377021² = 115562224449668882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240377041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120188510 + 120188511.

It is an arithmetic number, because the mean of its divisors is an integer number (120188511).

Almost surely, 2^240377021 is an apocalyptic number.

It is an amenable number.

240377021 is a deficient number, since it is larger than the sum of its proper divisors (1).

240377021 is an equidigital number, since it uses as much as digits as its factorization.

240377021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 240377021 is about 15504.0969101718. The cubic root of 240377021 is about 621.7717453577.

The spelling of 240377021 in words is "two hundred forty million, three hundred seventy-seven thousand, twenty-one".