1240430507 has 2 divisors, whose sum is σ = 1240430508. Its totient is φ = 1240430506.

The previous prime is 1240430479. The next prime is 1240430531. The reversal of 1240430507 is 7050340421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240430507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240430537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620215253 + 620215254.

It is an arithmetic number, because the mean of its divisors is an integer number (620215254).

Almost surely, 2^1240430507 is an apocalyptic number.

1240430507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240430507 is an equidigital number, since it uses as much as digits as its factorization.

1240430507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 1240430507 is about 35219.7459814803. The cubic root of 1240430507 is about 1074.4613871488.

Adding to 1240430507 its reverse (7050340421), we get a palindrome (8290770928).

The spelling of 1240430507 in words is "one billion, two hundred forty million, four hundred thirty thousand, five hundred seven".