42404858 has 4 divisors (see below), whose sum is σ = 63607290. Its totient is φ = 21202428.

The previous prime is 42404839. The next prime is 42404863. The reversal of 42404858 is 85840424.

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

It can be written as a sum of positive squares in only one way, i.e., 22629049 + 19775809 = 4757^2 + 4447^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601213 + ... + 10601216.

Almost surely, 2^42404858 is an apocalyptic number.

42404858 is a deficient number, since it is larger than the sum of its proper divisors (21202432).

42404858 is a wasteful number, since it uses less digits than its factorization.

42404858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21202431.

The product of its (nonzero) digits is 40960, while the sum is 35.

The square root of 42404858 is about 6511.9012584651. The cubic root of 42404858 is about 348.7159973358.

The spelling of 42404858 in words is "forty-two million, four hundred four thousand, eight hundred fifty-eight".