1240505507 has 2 divisors, whose sum is σ = 1240505508. Its totient is φ = 1240505506.

The previous prime is 1240505489. The next prime is 1240505527. The reversal of 1240505507 is 7055050421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240505507 - 2¹⁸ = 1240243363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240505507.

It is not a weakly prime, because it can be changed into another prime (1240505527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620252753 + 620252754.

It is an arithmetic number, because the mean of its divisors is an integer number (620252754).

Almost surely, 2^1240505507 is an apocalyptic number.

1240505507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240505507 is an equidigital number, since it uses as much as digits as its factorization.

1240505507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 1240505507 is about 35220.8107090112. The cubic root of 1240505507 is about 1074.4830417221.

Adding to 1240505507 its reverse (7055050421), we get a palindrome (8295555928).

The spelling of 1240505507 in words is "one billion, two hundred forty million, five hundred five thousand, five hundred seven".