120997820 has 12 divisors (see below), whose sum is σ = 254095464. Its totient is φ = 48399120.

The previous prime is 120997819. The next prime is 120997837. The reversal of 120997820 is 28799021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3024926 + ... + 3024965.

It is an arithmetic number, because the mean of its divisors is an integer number (21174622).

Almost surely, 2^120997820 is an apocalyptic number.

120997820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120997820 is an abundant number, since it is smaller than the sum of its proper divisors (133097644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120997820 is a wasteful number, since it uses less digits than its factorization.

120997820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049900 (or 6049898 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 120997820 is about 10999.9009086446. The cubic root of 120997820 is about 494.6057739294.

The spelling of 120997820 in words is "one hundred twenty million, nine hundred ninety-seven thousand, eight hundred twenty".