42004121524 has 24 divisors (see below), whose sum is σ = 73793236608. Its totient is φ = 20920431840.

The previous prime is 42004121521. The next prime is 42004121567. The reversal of 42004121524 is 42512140024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004121521) 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 7 ways as a sum of consecutive naturals, for example, 1976097 + ... + 1997239.

It is an arithmetic number, because the mean of its divisors is an integer number (3074718192).

Almost surely, 2^42004121524 is an apocalyptic number.

It is an amenable number.

42004121524 is a deficient number, since it is larger than the sum of its proper divisors (31789115084).

42004121524 is a wasteful number, since it uses less digits than its factorization.

42004121524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23055 (or 23053 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 42004121524 its reverse (42512140024), we get a palindrome (84516261548).

The spelling of 42004121524 in words is "forty-two billion, four million, one hundred twenty-one thousand, five hundred twenty-four".