100302120 has 48 divisors (see below), whose sum is σ = 325983060. Its totient is φ = 26747136.

The previous prime is 100302071. The next prime is 100302133. The reversal of 100302120 is 21203001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 85045284 + 15256836 = 9222^2 + 3906^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138949 + ... + 139668.

Almost surely, 2^100302120 is an apocalyptic number.

100302120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100302120 is an abundant number, since it is smaller than the sum of its proper divisors (225680940).

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

100302120 is a wasteful number, since it uses less digits than its factorization.

100302120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278634 (or 278627 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 100302120 is about 10015.0946076410. The cubic root of 100302120 is about 464.6258523471.

Adding to 100302120 its reverse (21203001), we get a palindrome (121505121).

The spelling of 100302120 in words is "one hundred million, three hundred two thousand, one hundred twenty".