42231578 has 8 divisors (see below), whose sum is σ = 65059572. Its totient is φ = 20545056.

The previous prime is 42231577. The next prime is 42231589. The reversal of 42231578 is 87513224.

It can be written as a sum of positive squares in 2 ways, for example, as 34374769 + 7856809 = 5863^2 + 2803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42231571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285275 + ... + 285422.

Almost surely, 2^42231578 is an apocalyptic number.

42231578 is a deficient number, since it is larger than the sum of its proper divisors (22827994).

42231578 is a wasteful number, since it uses less digits than its factorization.

42231578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570736.

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

The square root of 42231578 is about 6498.5827685735. The cubic root of 42231578 is about 348.2403599969.

The spelling of 42231578 in words is "forty-two million, two hundred thirty-one thousand, five hundred seventy-eight".