42645004 has 12 divisors (see below), whose sum is σ = 74675104. Its totient is φ = 21309264.

The previous prime is 42644989. The next prime is 42645011. The reversal of 42645004 is 40054624.

It is a self number, because there is not a number n which added to its sum of digits gives 42645004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9142 + ... + 12994.

Almost surely, 2^42645004 is an apocalyptic number.

It is an amenable number.

42645004 is a deficient number, since it is larger than the sum of its proper divisors (32030100).

42645004 is a wasteful number, since it uses less digits than its factorization.

42645004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6624 (or 6622 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 42645004 is about 6530.3142343994. The cubic root of 42645004 is about 349.3730381257.

Adding to 42645004 its reverse (40054624), we get a palindrome (82699628).

The spelling of 42645004 in words is "forty-two million, six hundred forty-five thousand, four".