1240304651 has 2 divisors, whose sum is σ = 1240304652. Its totient is φ = 1240304650.

The previous prime is 1240304627. The next prime is 1240304669. The reversal of 1240304651 is 1564030421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1240304651 - 2¹⁴ = 1240288267 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240304651.

It is not a weakly prime, because it can be changed into another prime (1240304951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620152325 + 620152326.

It is an arithmetic number, because the mean of its divisors is an integer number (620152326).

Almost surely, 2^1240304651 is an apocalyptic number.

1240304651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240304651 is an equidigital number, since it uses as much as digits as its factorization.

1240304651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1240304651 is about 35217.9592111752. The cubic root of 1240304651 is about 1074.4250470810.

The spelling of 1240304651 in words is "one billion, two hundred forty million, three hundred four thousand, six hundred fifty-one".