42804478 has 4 divisors (see below), whose sum is σ = 64206720. Its totient is φ = 21402238.

The previous prime is 42804467. The next prime is 42804497. The reversal of 42804478 is 87440824.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10701118 + ... + 10701121.

It is an arithmetic number, because the mean of its divisors is an integer number (16051680).

Almost surely, 2^42804478 is an apocalyptic number.

42804478 is a deficient number, since it is larger than the sum of its proper divisors (21402242).

42804478 is a wasteful number, since it uses less digits than its factorization.

42804478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21402241.

The product of its (nonzero) digits is 57344, while the sum is 37.

The square root of 42804478 is about 6542.5131257033. The cubic root of 42804478 is about 349.8079980928.

The spelling of 42804478 in words is "forty-two million, eight hundred four thousand, four hundred seventy-eight".