423120578 has 4 divisors (see below), whose sum is σ = 634680870. Its totient is φ = 211560288.

The previous prime is 423120569. The next prime is 423120589. The reversal of 423120578 is 875021324.

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., 410751289 + 12369289 = 20267^2 + 3517^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105780143 + ... + 105780146.

Almost surely, 2^423120578 is an apocalyptic number.

423120578 is a deficient number, since it is larger than the sum of its proper divisors (211560292).

423120578 is a wasteful number, since it uses less digits than its factorization.

423120578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211560291.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 423120578 is about 20569.8949438251. The cubic root of 423120578 is about 750.7373950567.

The spelling of 423120578 in words is "four hundred twenty-three million, one hundred twenty thousand, five hundred seventy-eight".