120204100 has 18 divisors (see below), whose sum is σ = 260843114. Its totient is φ = 48081600.

The previous prime is 120204061. The next prime is 120204137. The reversal of 120204100 is 1402021.

It can be written as a sum of positive squares in 3 ways, for example, as 432964 + 119771136 = 658^2 + 10944^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600921 + ... + 601120.

Almost surely, 2^120204100 is an apocalyptic number.

120204100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120204100 is an abundant number, since it is smaller than the sum of its proper divisors (140639014).

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

120204100 is a wasteful number, since it uses less digits than its factorization.

120204100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202055 (or 1202048 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 120204100 is about 10963.7630401245. The cubic root of 120204100 is about 493.5218975217.

Adding to 120204100 its reverse (1402021), we get a palindrome (121606121).

The spelling of 120204100 in words is "one hundred twenty million, two hundred four thousand, one hundred".