100030120 has 16 divisors (see below), whose sum is σ = 225067860. Its totient is φ = 40012032.

The previous prime is 100030109. The next prime is 100030121. The reversal of 100030120 is 21030001.

It can be written as a sum of positive squares in 2 ways, for example, as 99321156 + 708964 = 9966^2 + 842^2 .

It is not an unprimeable number, because it can be changed into a prime (100030121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250337 + ... + 1250416.

Almost surely, 2^100030120 is an apocalyptic number.

100030120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100030120 is an abundant number, since it is smaller than the sum of its proper divisors (125037740).

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

100030120 is a wasteful number, since it uses less digits than its factorization.

100030120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500764 (or 2500760 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 100030120 is about 10001.5058866153. The cubic root of 100030120 is about 464.2054802352.

Adding to 100030120 its reverse (21030001), we get a palindrome (121060121).

The spelling of 100030120 in words is "one hundred million, thirty thousand, one hundred twenty".