100902921 has 16 divisors (see below), whose sum is σ = 156364800. Its totient is φ = 56680848.

The previous prime is 100902917. The next prime is 100902929. The reversal of 100902921 is 129209001.

It is not a de Polignac number, because 100902921 - 2² = 100902917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100902891 and 100902900.

It is not an unprimeable number, because it can be changed into a prime (100902929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39481 + ... + 41958.

It is an arithmetic number, because the mean of its divisors is an integer number (9772800).

Almost surely, 2^100902921 is an apocalyptic number.

It is an amenable number.

100902921 is a deficient number, since it is larger than the sum of its proper divisors (55461879).

100902921 is an equidigital number, since it uses as much as digits as its factorization.

100902921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81508.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 100902921 is about 10045.0445992041. The cubic root of 100902921 is about 465.5516957466.

The spelling of 100902921 in words is "one hundred million, nine hundred two thousand, nine hundred twenty-one".