100102000 has 40 divisors (see below), whose sum is σ = 242051472. Its totient is φ = 40040000.

The previous prime is 100101973. The next prime is 100102019. The reversal of 100102000 is 201001.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23026 + ... + 27025.

Almost surely, 2^100102000 is an apocalyptic number.

100102000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100102000 is an abundant number, since it is smaller than the sum of its proper divisors (141949472).

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

100102000 is an equidigital number, since it uses as much as digits as its factorization.

100102000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50074 (or 50058 counting only the distinct ones).

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

The square root of 100102000 is about 10005.0987001628. The cubic root of 100102000 is about 464.3166437552.

Adding to 100102000 its reverse (201001), we get a palindrome (100303001).

Subtracting from 100102000 its reverse (201001), we obtain a palindrome (99900999).

The spelling of 100102000 in words is "one hundred million, one hundred two thousand".