21046107 has 8 divisors (see below), whose sum is σ = 28480576. Its totient is φ = 13821192.

The previous prime is 21046073. The next prime is 21046111. The reversal of 21046107 is 70164012.

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

It is not a de Polignac number, because 21046107 - 2¹⁰ = 21045083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21046147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52153 + ... + 52554.

It is an arithmetic number, because the mean of its divisors is an integer number (3560072).

Almost surely, 2^21046107 is an apocalyptic number.

21046107 is a deficient number, since it is larger than the sum of its proper divisors (7434469).

21046107 is a wasteful number, since it uses less digits than its factorization.

21046107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104777.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 21046107 is about 4587.6036228079. The cubic root of 21046107 is about 276.0941838825.

The spelling of 21046107 in words is "twenty-one million, forty-six thousand, one hundred seven".