21614542 has 8 divisors (see below), whose sum is σ = 32461416. Its totient is φ = 10794072.

The previous prime is 21614539. The next prime is 21614563. The reversal of 21614542 is 24541612.

It is a happy number.

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

It is a congruent number.

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, 4408 + ... + 7915.

It is an arithmetic number, because the mean of its divisors is an integer number (4057677).

Almost surely, 2^21614542 is an apocalyptic number.

21614542 is a deficient number, since it is larger than the sum of its proper divisors (10846874).

21614542 is a wasteful number, since it uses less digits than its factorization.

21614542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13202.

The product of its digits is 1920, while the sum is 25.

The square root of 21614542 is about 4649.1442223274. The cubic root of 21614542 is about 278.5578141307.

The spelling of 21614542 in words is "twenty-one million, six hundred fourteen thousand, five hundred forty-two".