21542914 has 8 divisors (see below), whose sum is σ = 33066000. Its totient is φ = 10520916.

The previous prime is 21542897. The next prime is 21542921. The reversal of 21542914 is 41924512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21542914² = 928194287222792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125164 + ... + 125335.

It is an arithmetic number, because the mean of its divisors is an integer number (4133250).

Almost surely, 2^21542914 is an apocalyptic number.

21542914 is a deficient number, since it is larger than the sum of its proper divisors (11523086).

21542914 is a wasteful number, since it uses less digits than its factorization.

21542914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250544.

The product of its digits is 2880, while the sum is 28.

The square root of 21542914 is about 4641.4344765385. The cubic root of 21542914 is about 278.2497712109.

The spelling of 21542914 in words is "twenty-one million, five hundred forty-two thousand, nine hundred fourteen".