42231278 has 8 divisors (see below), whose sum is σ = 64000272. Its totient is φ = 20897856.

The previous prime is 42231263. The next prime is 42231283. The reversal of 42231278 is 87213224.

42231278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42231278.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 108650 + ... + 109037.

It is an arithmetic number, because the mean of its divisors is an integer number (8000034).

Almost surely, 2^42231278 is an apocalyptic number.

42231278 is a deficient number, since it is larger than the sum of its proper divisors (21768994).

42231278 is a wasteful number, since it uses less digits than its factorization.

42231278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217786.

The product of its digits is 5376, while the sum is 29.

The square root of 42231278 is about 6498.5596865767. The cubic root of 42231278 is about 348.2395353978.

The spelling of 42231278 in words is "forty-two million, two hundred thirty-one thousand, two hundred seventy-eight".