21134054 has 4 divisors (see below), whose sum is σ = 31701084. Its totient is φ = 10567026.

The previous prime is 21134021. The next prime is 21134063. The reversal of 21134054 is 45043112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5283512 + ... + 5283515.

It is an arithmetic number, because the mean of its divisors is an integer number (7925271).

Almost surely, 2^21134054 is an apocalyptic number.

21134054 is a deficient number, since it is larger than the sum of its proper divisors (10567030).

21134054 is a wasteful number, since it uses less digits than its factorization.

21134054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10567029.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 21134054 is about 4597.1789175537. The cubic root of 21134054 is about 276.4782281612.

Adding to 21134054 its reverse (45043112), we get a palindrome (66177166).

The spelling of 21134054 in words is "twenty-one million, one hundred thirty-four thousand, fifty-four".