121763907 has 12 divisors (see below), whose sum is σ = 176267104. Its totient is φ = 80997840.

The previous prime is 121763903. The next prime is 121763923. The reversal of 121763907 is 709367121.

It is a happy number.

121763907 is a `hidden beast` number, since 1 + 2 + 17 + 639 + 0 + 7 = 666.

It is not a de Polignac number, because 121763907 - 2² = 121763903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121763903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10444 + ... + 18777.

Almost surely, 2^121763907 is an apocalyptic number.

121763907 is a deficient number, since it is larger than the sum of its proper divisors (54503197).

121763907 is a wasteful number, since it uses less digits than its factorization.

121763907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29690 (or 29687 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 121763907 is about 11034.6684136860. The cubic root of 121763907 is about 495.6474295393.

The spelling of 121763907 in words is "one hundred twenty-one million, seven hundred sixty-three thousand, nine hundred seven".