21014124 has 12 divisors (see below), whose sum is σ = 49032984. Its totient is φ = 7004704.

The previous prime is 21014101. The next prime is 21014131. The reversal of 21014124 is 42141012.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875577 + ... + 875600.

It is an arithmetic number, because the mean of its divisors is an integer number (4086082).

Almost surely, 2^21014124 is an apocalyptic number.

It is an amenable number.

21014124 is an abundant number, since it is smaller than the sum of its proper divisors (28018860).

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

21014124 is a wasteful number, since it uses less digits than its factorization.

21014124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751184 (or 1751182 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 21014124 is about 4584.1164906664. The cubic root of 21014124 is about 275.9542562290.

Adding to 21014124 its reverse (42141012), we get a palindrome (63155136).

The spelling of 21014124 in words is "twenty-one million, fourteen thousand, one hundred twenty-four".