1260421759 has 2 divisors, whose sum is σ = 1260421760. Its totient is φ = 1260421758.

The previous prime is 1260421727. The next prime is 1260421763. The reversal of 1260421759 is 9571240621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1260421759 - 2⁵ = 1260421727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1260421859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630210879 + 630210880.

It is an arithmetic number, because the mean of its divisors is an integer number (630210880).

Almost surely, 2^1260421759 is an apocalyptic number.

1260421759 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260421759 is an equidigital number, since it uses as much as digits as its factorization.

1260421759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1260421759 is about 35502.4190584247. The cubic root of 1260421759 is about 1080.2027965655.

The spelling of 1260421759 in words is "one billion, two hundred sixty million, four hundred twenty-one thousand, seven hundred fifty-nine".