21134410 has 32 divisors (see below), whose sum is σ = 41731200. Its totient is φ = 7642560.

The previous prime is 21134389. The next prime is 21134419. The reversal of 21134410 is 1443112.

It is not an unprimeable number, because it can be changed into a prime (21134419) 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 15 ways as a sum of consecutive naturals, for example, 24771 + ... + 25609.

It is an arithmetic number, because the mean of its divisors is an integer number (1304100).

Almost surely, 2^21134410 is an apocalyptic number.

21134410 is a deficient number, since it is larger than the sum of its proper divisors (20596790).

21134410 is a wasteful number, since it uses less digits than its factorization.

21134410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

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

The square root of 21134410 is about 4597.2176367886. The cubic root of 21134410 is about 276.4797805641.

Adding to 21134410 its reverse (1443112), we get a palindrome (22577522).

It can be divided in two parts, 21 and 134410, that added together give a palindrome (134431).

The spelling of 21134410 in words is "twenty-one million, one hundred thirty-four thousand, four hundred ten".