21046130 has 32 divisors (see below), whose sum is σ = 44222976. Its totient is φ = 7061184.

The previous prime is 21046121. The next prime is 21046139. The reversal of 21046130 is 3164012.

It is an interprime number because it is at equal distance from previous prime (21046121) and next prime (21046139).

It is a junction number, because it is equal to n+sod(n) for n = 21046099 and 21046108.

It is not an unprimeable number, because it can be changed into a prime (21046139) 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, 92 + ... + 6488.

It is an arithmetic number, because the mean of its divisors is an integer number (1381968).

Almost surely, 2^21046130 is an apocalyptic number.

21046130 is an abundant number, since it is smaller than the sum of its proper divisors (23176846).

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

21046130 is a wasteful number, since it uses less digits than its factorization.

21046130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6458.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 21046130 is about 4587.6061295626. The cubic root of 21046130 is about 276.0942844580.

The spelling of 21046130 in words is "twenty-one million, forty-six thousand, one hundred thirty".