121763906 has 16 divisors (see below), whose sum is σ = 201307680. Its totient is φ = 54775680.

The previous prime is 121763903. The next prime is 121763923. The reversal of 121763906 is 609367121.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26396 + ... + 30663.

It is an arithmetic number, because the mean of its divisors is an integer number (12581730).

Almost surely, 2^121763906 is an apocalyptic number.

121763906 is a deficient number, since it is larger than the sum of its proper divisors (79543774).

121763906 is a wasteful number, since it uses less digits than its factorization.

121763906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57169.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 121763906 is about 11034.6683683743. The cubic root of 121763906 is about 495.6474281824.

The spelling of 121763906 in words is "one hundred twenty-one million, seven hundred sixty-three thousand, nine hundred six".