42231407 has 4 divisors (see below), whose sum is σ = 43028280. Its totient is φ = 41434536.

The previous prime is 42231403. The next prime is 42231491. The reversal of 42231407 is 70413224.

42231407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42231407 - 2² = 42231403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231403) by changing a digit.

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, 398357 + ... + 398462.

It is an arithmetic number, because the mean of its divisors is an integer number (10757070).

Almost surely, 2^42231407 is an apocalyptic number.

42231407 is a deficient number, since it is larger than the sum of its proper divisors (796873).

42231407 is an equidigital number, since it uses as much as digits as its factorization.

42231407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796872.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 42231407 is about 6498.5696118454. The cubic root of 42231407 is about 348.2398899759.

The spelling of 42231407 in words is "forty-two million, two hundred thirty-one thousand, four hundred seven".