120638668 has 6 divisors (see below), whose sum is σ = 211117676. Its totient is φ = 60319332.

The previous prime is 120638641. The next prime is 120638671. The reversal of 120638668 is 866836021.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 120638668.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15079830 + ... + 15079837.

Almost surely, 2^120638668 is an apocalyptic number.

It is an amenable number.

120638668 is a deficient number, since it is larger than the sum of its proper divisors (90479008).

120638668 is a wasteful number, since it uses less digits than its factorization.

120638668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30159671 (or 30159669 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 120638668 is about 10983.5635383058. The cubic root of 120638668 is about 494.1159174398.

The spelling of 120638668 in words is "one hundred twenty million, six hundred thirty-eight thousand, six hundred sixty-eight".