21134104 has 16 divisors (see below), whose sum is σ = 40698000. Its totient is φ = 10281312.

The previous prime is 21134093. The next prime is 21134107. The reversal of 21134104 is 40143112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21134107) 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 3 ways as a sum of consecutive naturals, for example, 35404 + ... + 35995.

It is an arithmetic number, because the mean of its divisors is an integer number (2543625).

Almost surely, 2^21134104 is an apocalyptic number.

It is an amenable number.

21134104 is a deficient number, since it is larger than the sum of its proper divisors (19563896).

21134104 is a wasteful number, since it uses less digits than its factorization.

21134104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71442 (or 71438 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21134104 is about 4597.1843556682. The cubic root of 21134104 is about 276.4784461964.

Adding to 21134104 its reverse (40143112), we get a palindrome (61277216).

The spelling of 21134104 in words is "twenty-one million, one hundred thirty-four thousand, one hundred four".