42005022531 has 16 divisors (see below), whose sum is σ = 56160492288. Its totient is φ = 27926532000.

The previous prime is 42005022529. The next prime is 42005022533. The reversal of 42005022531 is 13522050024.

It is an interprime number because it is at equal distance from previous prime (42005022529) and next prime (42005022533).

It is not a de Polignac number, because 42005022531 - 2¹ = 42005022529 is a prime.

It is a super-2 number, since 2×42005022531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42005022533) by changing a digit.

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, 2286081 + ... + 2304381.

It is an arithmetic number, because the mean of its divisors is an integer number (3510030768).

Almost surely, 2^42005022531 is an apocalyptic number.

42005022531 is a deficient number, since it is larger than the sum of its proper divisors (14155469757).

42005022531 is a wasteful number, since it uses less digits than its factorization.

42005022531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20362.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 42005022531 its reverse (13522050024), we get a palindrome (55527072555).

The spelling of 42005022531 in words is "forty-two billion, five million, twenty-two thousand, five hundred thirty-one".