21442524042 has 32 divisors (see below), whose sum is σ = 44817505920. Its totient is φ = 6826374720.

The previous prime is 21442524011. The next prime is 21442524079. The reversal of 21442524042 is 24042524412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26317 + ... + 208752.

It is an arithmetic number, because the mean of its divisors is an integer number (1400547060).

Almost surely, 2^21442524042 is an apocalyptic number.

21442524042 is an abundant number, since it is smaller than the sum of its proper divisors (23374981878).

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

21442524042 is a wasteful number, since it uses less digits than its factorization.

21442524042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235758.

The product of its (nonzero) digits is 20480, while the sum is 30.

The spelling of 21442524042 in words is "twenty-one billion, four hundred forty-two million, five hundred twenty-four thousand, forty-two".