423090578 has 4 divisors (see below), whose sum is σ = 634635870. Its totient is φ = 211545288.

The previous prime is 423090557. The next prime is 423090581. The reversal of 423090578 is 875090324.

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., 407353489 + 15737089 = 20183^2 + 3967^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105772643 + ... + 105772646.

Almost surely, 2^423090578 is an apocalyptic number.

423090578 is a deficient number, since it is larger than the sum of its proper divisors (211545292).

423090578 is a wasteful number, since it uses less digits than its factorization.

423090578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211545291.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 423090578 is about 20569.1657098678. The cubic root of 423090578 is about 750.7196517661.

The spelling of 423090578 in words is "four hundred twenty-three million, ninety thousand, five hundred seventy-eight".