120265820 has 48 divisors (see below), whose sum is σ = 281504160. Its totient is φ = 42891264.

The previous prime is 120265811. The next prime is 120265823. The reversal of 120265820 is 28562021.

It is a self number, because there is not a number n which added to its sum of digits gives 120265820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120265823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2849 + ... + 15768.

It is an arithmetic number, because the mean of its divisors is an integer number (5864670).

Almost surely, 2^120265820 is an apocalyptic number.

120265820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120265820 is an abundant number, since it is smaller than the sum of its proper divisors (161238340).

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

120265820 is a wasteful number, since it uses less digits than its factorization.

120265820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18662 (or 18660 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 120265820 is about 10966.5774059184. The cubic root of 120265820 is about 493.6063509905.

The spelling of 120265820 in words is "one hundred twenty million, two hundred sixty-five thousand, eight hundred twenty".