21234102 has 16 divisors (see below), whose sum is σ = 42513600. Its totient is φ = 7070472.

The previous prime is 21234097. The next prime is 21234113. The reversal of 21234102 is 20143212.

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, 9153 + ... + 11235.

It is an arithmetic number, because the mean of its divisors is an integer number (2657100).

Almost surely, 2^21234102 is an apocalyptic number.

21234102 is an abundant number, since it is smaller than the sum of its proper divisors (21279498).

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

21234102 is a wasteful number, since it uses less digits than its factorization.

21234102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3787.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21234102 is about 4608.0475257966. The cubic root of 21234102 is about 276.9138214974.

Adding to 21234102 its reverse (20143212), we get a palindrome (41377314).

The spelling of 21234102 in words is "twenty-one million, two hundred thirty-four thousand, one hundred two".