21241134 has 24 divisors (see below), whose sum is σ = 46148232. Its totient is φ = 7061040.

The previous prime is 21241123. The next prime is 21241147. The reversal of 21241134 is 43114212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6177 + ... + 8979.

It is an arithmetic number, because the mean of its divisors is an integer number (1922843).

Almost surely, 2^21241134 is an apocalyptic number.

21241134 is an abundant number, since it is smaller than the sum of its proper divisors (24907098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21241134 is a wasteful number, since it uses less digits than its factorization.

21241134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232 (or 3229 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 21241134 is about 4608.8104756000. The cubic root of 21241134 is about 276.9443862163.

Adding to 21241134 its reverse (43114212), we get a palindrome (64355346).

The spelling of 21241134 in words is "twenty-one million, two hundred forty-one thousand, one hundred thirty-four".