100120000 has 70 divisors (see below), whose sum is σ = 248364248. Its totient is φ = 40032000.

The previous prime is 100119997. The next prime is 100120003. The reversal of 100120000 is 21001.

100120000 = T₂₂₄ + T₂₂₅ + ... + T₈₄₈.

It is an interprime number because it is at equal distance from previous prime (100119997) and next prime (100120003).

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38749 + ... + 41251.

Almost surely, 2^100120000 is an apocalyptic number.

100120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124182124).

100120000 is an abundant number, since it is smaller than the sum of its proper divisors (148244248).

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

100120000 is an frugal number, since it uses more digits than its factorization.

100120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535 (or 2510 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 100120000 is about 10005.9982010792. The cubic root of 100120000 is about 464.3444726987.

Adding to 100120000 its reverse (21001), we get a palindrome (100141001).

The spelling of 100120000 in words is "one hundred million, one hundred twenty thousand".