120199990 has 16 divisors (see below), whose sum is σ = 216739152. Its totient is φ = 47995744.

The previous prime is 120199957. The next prime is 120199993. The reversal of 120199990 is 99991021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120199993) 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, 4369 + ... + 16108.

It is an arithmetic number, because the mean of its divisors is an integer number (13546197).

Almost surely, 2^120199990 is an apocalyptic number.

120199990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120199990 is a deficient number, since it is larger than the sum of its proper divisors (96539162).

120199990 is a wasteful number, since it uses less digits than its factorization.

120199990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21071.

The product of its (nonzero) digits is 13122, while the sum is 40.

The square root of 120199990 is about 10963.5756028770. The cubic root of 120199990 is about 493.5162726494.

The spelling of 120199990 in words is "one hundred twenty million, one hundred ninety-nine thousand, nine hundred ninety".