21014104 has 8 divisors (see below), whose sum is σ = 39401460. Its totient is φ = 10507048.

The previous prime is 21014101. The next prime is 21014131. The reversal of 21014104 is 40141012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313374 + ... + 1313389.

Almost surely, 2^21014104 is an apocalyptic number.

It is an amenable number.

21014104 is a deficient number, since it is larger than the sum of its proper divisors (18387356).

21014104 is a wasteful number, since it uses less digits than its factorization.

21014104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626769 (or 2626765 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 21014104 is about 4584.1143092205. The cubic root of 21014104 is about 275.9541686834.

Adding to 21014104 its reverse (40141012), we get a palindrome (61155116).

The spelling of 21014104 in words is "twenty-one million, fourteen thousand, one hundred four".