21104126 has 8 divisors (see below), whose sum is σ = 31774680. Its totient is φ = 10512568.

The previous prime is 21104071. The next prime is 21104131. The reversal of 21104126 is 62140112.

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

It is a congruent number.

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, 19076 + ... + 20151.

It is an arithmetic number, because the mean of its divisors is an integer number (3971835).

Almost surely, 2^21104126 is an apocalyptic number.

21104126 is a deficient number, since it is larger than the sum of its proper divisors (10670554).

21104126 is a wasteful number, since it uses less digits than its factorization.

21104126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39498.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 21104126 is about 4593.9227246439. The cubic root of 21104126 is about 276.3476592808.

Adding to 21104126 its reverse (62140112), we get a palindrome (83244238).

The spelling of 21104126 in words is "twenty-one million, one hundred four thousand, one hundred twenty-six".