120019988 has 12 divisors (see below), whose sum is σ = 229129152. Its totient is φ = 54554520.

The previous prime is 120019987. The next prime is 120020011. The reversal of 120019988 is 889910021.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120019987) 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 3 ways as a sum of consecutive naturals, for example, 1363820 + ... + 1363907.

It is an arithmetic number, because the mean of its divisors is an integer number (19094096).

Almost surely, 2^120019988 is an apocalyptic number.

It is an amenable number.

120019988 is a deficient number, since it is larger than the sum of its proper divisors (109109164).

120019988 is a wasteful number, since it uses less digits than its factorization.

120019988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727742 (or 2727740 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 120019988 is about 10955.3634353224. The cubic root of 120019988 is about 493.2697992607.

The spelling of 120019988 in words is "one hundred twenty million, nineteen thousand, nine hundred eighty-eight".