21014424342 has 12 divisors (see below), whose sum is σ = 45531252780. Its totient is φ = 7004808108.

The previous prime is 21014424337. The next prime is 21014424391. The reversal of 21014424342 is 24342441012.

21014424342 is a `hidden beast` number, since 210 + 1 + 442 + 4 + 3 + 4 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 583733992 + ... + 583734027.

It is an arithmetic number, because the mean of its divisors is an integer number (3794271065).

Almost surely, 2^21014424342 is an apocalyptic number.

21014424342 is an abundant number, since it is smaller than the sum of its proper divisors (24516828438).

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

21014424342 is a wasteful number, since it uses less digits than its factorization.

21014424342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167468027 (or 1167468024 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21014424342 its reverse (24342441012), we get a palindrome (45356865354).

The spelling of 21014424342 in words is "twenty-one billion, fourteen million, four hundred twenty-four thousand, three hundred forty-two".