121744507 has 2 divisors, whose sum is σ = 121744508. Its totient is φ = 121744506.

The previous prime is 121744501. The next prime is 121744529. The reversal of 121744507 is 705447121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121744507 - 2³ = 121744499 is a prime.

It is not a weakly prime, because it can be changed into another prime (121744501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60872253 + 60872254.

It is an arithmetic number, because the mean of its divisors is an integer number (60872254).

Almost surely, 2^121744507 is an apocalyptic number.

121744507 is a deficient number, since it is larger than the sum of its proper divisors (1).

121744507 is an equidigital number, since it uses as much as digits as its factorization.

121744507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 121744507 is about 11033.7893309597. The cubic root of 121744507 is about 495.6211051791.

The spelling of 121744507 in words is "one hundred twenty-one million, seven hundred forty-four thousand, five hundred seven".