42045204531 has 32 divisors (see below), whose sum is σ = 63284670720. Its totient is φ = 24595804800.

The previous prime is 42045204527. The next prime is 42045204563. The reversal of 42045204531 is 13540254024.

It is not a de Polignac number, because 42045204531 - 2² = 42045204527 is a prime.

It is a super-2 number, since 2×42045204531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42045204521) 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 31 ways as a sum of consecutive naturals, for example, 5825481 + ... + 5832693.

It is an arithmetic number, because the mean of its divisors is an integer number (1977645960).

Almost surely, 2^42045204531 is an apocalyptic number.

42045204531 is a deficient number, since it is larger than the sum of its proper divisors (21239466189).

42045204531 is a wasteful number, since it uses less digits than its factorization.

42045204531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13347.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 42045204531 its reverse (13540254024), we get a palindrome (55585458555).

The spelling of 42045204531 in words is "forty-two billion, forty-five million, two hundred four thousand, five hundred thirty-one".