740465021 has 2 divisors, whose sum is σ = 740465022. Its totient is φ = 740465020.

The previous prime is 740465009. The next prime is 740465041. The reversal of 740465021 is 120564047.

740465021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 662496121 + 77968900 = 25739^2 + 8830^2 .

It is a cyclic number.

It is not a de Polignac number, because 740465021 - 2²⁶ = 673356157 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740465041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370232510 + 370232511.

It is an arithmetic number, because the mean of its divisors is an integer number (370232511).

Almost surely, 2^740465021 is an apocalyptic number.

It is an amenable number.

740465021 is a deficient number, since it is larger than the sum of its proper divisors (1).

740465021 is an equidigital number, since it uses as much as digits as its factorization.

740465021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 740465021 is about 27211.4869310738. The cubic root of 740465021 is about 904.6935954883.

The spelling of 740465021 in words is "seven hundred forty million, four hundred sixty-five thousand, twenty-one".