21410013 has 8 divisors (see below), whose sum is σ = 29318368. Its totient is φ = 13887504.

The previous prime is 21410009. The next prime is 21410023. The reversal of 21410013 is 31001412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21410013 - 2² = 21410009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96331 + ... + 96552.

It is an arithmetic number, because the mean of its divisors is an integer number (3664796).

Almost surely, 2^21410013 is an apocalyptic number.

It is an amenable number.

21410013 is a deficient number, since it is larger than the sum of its proper divisors (7908355).

21410013 is a wasteful number, since it uses less digits than its factorization.

21410013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192923.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 21410013 is about 4627.0955252728. The cubic root of 21410013 is about 277.6764043540.

Adding to 21410013 its reverse (31001412), we get a palindrome (52411425).

The spelling of 21410013 in words is "twenty-one million, four hundred ten thousand, thirteen".