1240231459 has 2 divisors, whose sum is σ = 1240231460. Its totient is φ = 1240231458.

The previous prime is 1240231381. The next prime is 1240231469. The reversal of 1240231459 is 9541320421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1240231459 - 2⁷ = 1240231331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240231459.

It is not a weakly prime, because it can be changed into another prime (1240231469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620115729 + 620115730.

It is an arithmetic number, because the mean of its divisors is an integer number (620115730).

Almost surely, 2^1240231459 is an apocalyptic number.

1240231459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240231459 is an equidigital number, since it uses as much as digits as its factorization.

1240231459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1240231459 is about 35216.9200669224. The cubic root of 1240231459 is about 1074.4039122561.

The spelling of 1240231459 in words is "one billion, two hundred forty million, two hundred thirty-one thousand, four hundred fifty-nine".