42844904 has 8 divisors (see below), whose sum is σ = 80334210. Its totient is φ = 21422448.

The previous prime is 42844831. The next prime is 42844909. The reversal of 42844904 is 40944824.

It can be written as a sum of positive squares in only one way, i.e., 30580900 + 12264004 = 5530^2 + 3502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (42844909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2677799 + ... + 2677814.

Almost surely, 2^42844904 is an apocalyptic number.

It is an amenable number.

42844904 is a deficient number, since it is larger than the sum of its proper divisors (37489306).

42844904 is a wasteful number, since it uses less digits than its factorization.

42844904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5355619 (or 5355615 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 42844904 is about 6545.6018821801. The cubic root of 42844904 is about 349.9180869532.

The spelling of 42844904 in words is "forty-two million, eight hundred forty-four thousand, nine hundred four".