42231314021 has 4 divisors (see below), whose sum is σ = 45479876652. Its totient is φ = 38982751392.

The previous prime is 42231313991. The next prime is 42231314029. The reversal of 42231314021 is 12041313224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8143077121 + 34088236900 = 90239^2 + 184630^2 .

It is not a de Polignac number, because 42231314021 - 2¹⁴ = 42231297637 is a prime.

It is a super-2 number, since 2×42231314021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231314029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624281296 + ... + 1624281321.

It is an arithmetic number, because the mean of its divisors is an integer number (11369969163).

Almost surely, 2^42231314021 is an apocalyptic number.

It is an amenable number.

42231314021 is a deficient number, since it is larger than the sum of its proper divisors (3248562631).

42231314021 is a wasteful number, since it uses less digits than its factorization.

42231314021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248562630.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 42231314021 its reverse (12041313224), we get a palindrome (54272627245).

The spelling of 42231314021 in words is "forty-two billion, two hundred thirty-one million, three hundred fourteen thousand, twenty-one".