42404666004 has 18 divisors (see below), whose sum is σ = 107189572490. Its totient is φ = 14134888656.

The previous prime is 42404665993. The next prime is 42404666047. The reversal of 42404666004 is 40066640424.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40541017104 + 1863648900 = 201348^2 + 43170^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1177907389 = 42404666004 / (4 + 2 + 4 + 0 + 4 + 6 + 6 + 6 + 0 + 0 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 42404666004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 588953659 + ... + 588953730.

Almost surely, 2^42404666004 is an apocalyptic number.

It is an amenable number.

42404666004 is an abundant number, since it is smaller than the sum of its proper divisors (64784906486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42404666004 is a wasteful number, since it uses less digits than its factorization.

42404666004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177907399 (or 1177907394 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 42404666004 in words is "forty-two billion, four hundred four million, six hundred sixty-six thousand, four".