1042646904 has 96 divisors (see below), whose sum is σ = 3153761520. Its totient is φ = 320806656.

The previous prime is 1042646903. The next prime is 1042646909. The reversal of 1042646904 is 4096462401.

1042646904 is a `hidden beast` number, since 1 + 0 + 4 + 2 + 646 + 9 + 0 + 4 = 666.

It is a super-2 number, since 2×1042646904² = 2174225132841570432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042646903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4644 + ... + 45900.

Almost surely, 2^1042646904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1042646904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1576880760).

1042646904 is an abundant number, since it is smaller than the sum of its proper divisors (2111114616).

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

1042646904 is a wasteful number, since it uses less digits than its factorization.

1042646904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41291 (or 41275 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1042646904 is about 32290.0434189860. The cubic root of 1042646904 is about 1014.0182063185.

The spelling of 1042646904 in words is "one billion, forty-two million, six hundred forty-six thousand, nine hundred four".