21842702 has 8 divisors (see below), whose sum is σ = 37444656. Its totient is φ = 9361152.

The previous prime is 21842699. The next prime is 21842719. The reversal of 21842702 is 20724812.

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, 780083 + ... + 780110.

It is an arithmetic number, because the mean of its divisors is an integer number (4680582).

Almost surely, 2^21842702 is an apocalyptic number.

21842702 is a deficient number, since it is larger than the sum of its proper divisors (15601954).

21842702 is a wasteful number, since it uses less digits than its factorization.

21842702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560202.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 21842702 is about 4673.6176565911. The cubic root of 21842702 is about 279.5345242347.

The spelling of 21842702 in words is "twenty-one million, eight hundred forty-two thousand, seven hundred two".