21068134 has 16 divisors (see below), whose sum is σ = 33712848. Its totient is φ = 9839872.

The previous prime is 21068101. The next prime is 21068149. The reversal of 21068134 is 43186012.

It is a junction number, because it is equal to n+sod(n) for n = 21068099 and 21068108.

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, 2397 + ... + 6919.

It is an arithmetic number, because the mean of its divisors is an integer number (2107053).

Almost surely, 2^21068134 is an apocalyptic number.

21068134 is a deficient number, since it is larger than the sum of its proper divisors (12644714).

21068134 is a wasteful number, since it uses less digits than its factorization.

21068134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 21068134 is about 4590.0037037022. The cubic root of 21068134 is about 276.1904709879.

The spelling of 21068134 in words is "twenty-one million, sixty-eight thousand, one hundred thirty-four".