42004240456 has 16 divisors (see below), whose sum is σ = 78762973500. Its totient is φ = 21000780864.

The previous prime is 42004240451. The next prime is 42004240457. The reversal of 42004240456 is 65404240024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41752383556 + 251856900 = 204334^2 + 15870^2 .

It is not an unprimeable number, because it can be changed into a prime (42004240451) 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 3 ways as a sum of consecutive naturals, for example, 27231 + ... + 291118.

Almost surely, 2^42004240456 is an apocalyptic number.

It is an amenable number.

42004240456 is a deficient number, since it is larger than the sum of its proper divisors (36758733044).

42004240456 is a wasteful number, since it uses less digits than its factorization.

42004240456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334848 (or 334844 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The spelling of 42004240456 in words is "forty-two billion, four million, two hundred forty thousand, four hundred fifty-six".