2100902 has 4 divisors (see below), whose sum is σ = 3151356. Its totient is φ = 1050450.

The previous prime is 2100899. The next prime is 2100913. The reversal of 2100902 is 2090012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525224 + ... + 525227.

It is an arithmetic number, because the mean of its divisors is an integer number (787839).

2^2100902 is an apocalyptic number.

2100902 is a deficient number, since it is larger than the sum of its proper divisors (1050454).

2100902 is a wasteful number, since it uses less digits than its factorization.

2100902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050453.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2100902 is about 1449.4488607743. The cubic root of 2100902 is about 128.0762485157.

Adding to 2100902 its reverse (2090012), we get a palindrome (4190914).

The spelling of 2100902 in words is "two million, one hundred thousand, nine hundred two".