21714942 has 16 divisors (see below), whose sum is σ = 44831232. Its totient is φ = 7004760.

The previous prime is 21714937. The next prime is 21714943. The reversal of 21714942 is 24941712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58188 + ... + 58559.

It is an arithmetic number, because the mean of its divisors is an integer number (2801952).

Almost surely, 2^21714942 is an apocalyptic number.

21714942 is an abundant number, since it is smaller than the sum of its proper divisors (23116290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21714942 is a wasteful number, since it uses less digits than its factorization.

21714942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116783.

The product of its digits is 4032, while the sum is 30.

The square root of 21714942 is about 4659.9293986068. The cubic root of 21714942 is about 278.9884503383.

The spelling of 21714942 in words is "twenty-one million, seven hundred fourteen thousand, nine hundred forty-two".