21600742 has 8 divisors (see below), whose sum is σ = 32453136. Its totient is φ = 10783032.

The previous prime is 21600673. The next prime is 21600743. The reversal of 21600742 is 24700612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21600743) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 7053 + ... + 9640.

It is an arithmetic number, because the mean of its divisors is an integer number (4056642).

Almost surely, 2^21600742 is an apocalyptic number.

21600742 is a deficient number, since it is larger than the sum of its proper divisors (10852394).

21600742 is a wasteful number, since it uses less digits than its factorization.

21600742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17342.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 21600742 is about 4647.6598412534. The cubic root of 21600742 is about 278.4985189237.

The spelling of 21600742 in words is "twenty-one million, six hundred thousand, seven hundred forty-two".