21062134 has 4 divisors (see below), whose sum is σ = 31593204. Its totient is φ = 10531066.

The previous prime is 21062101. The next prime is 21062137. The reversal of 21062134 is 43126012.

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

It is a super-2 number, since 2×21062134² = 887226977267912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21062137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5265532 + ... + 5265535.

It is an arithmetic number, because the mean of its divisors is an integer number (7898301).

Almost surely, 2^21062134 is an apocalyptic number.

21062134 is a deficient number, since it is larger than the sum of its proper divisors (10531070).

21062134 is a wasteful number, since it uses less digits than its factorization.

21062134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10531069.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 21062134 is about 4589.3500629174. The cubic root of 21062134 is about 276.1642497104.

Adding to 21062134 its reverse (43126012), we get a palindrome (64188146).

The spelling of 21062134 in words is "twenty-one million, sixty-two thousand, one hundred thirty-four".