21134034 has 20 divisors (see below), whose sum is σ = 47356254. Its totient is φ = 7044624.

The previous prime is 21134021. The next prime is 21134063. The reversal of 21134034 is 43043112.

It can be written as a sum of positive squares in only one way, i.e., 14085009 + 7049025 = 3753^2 + 2655^2 .

It is a super-2 number, since 2×21134034² = 893294786226312, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 21133998 and 21134016.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 65067 + ... + 65390.

Almost surely, 2^21134034 is an apocalyptic number.

21134034 is an abundant number, since it is smaller than the sum of its proper divisors (26222220).

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

21134034 is a wasteful number, since it uses less digits than its factorization.

21134034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130471 (or 130462 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 21134034 is about 4597.1767423061. The cubic root of 21134034 is about 276.4781409471.

Adding to 21134034 its reverse (43043112), we get a palindrome (64177146).

The spelling of 21134034 in words is "twenty-one million, one hundred thirty-four thousand, thirty-four".