42312442 has 8 divisors (see below), whose sum is σ = 63873396. Its totient is φ = 21021312.

The previous prime is 42312437. The next prime is 42312481. The reversal of 42312442 is 24421324.

It is a happy number.

42312442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39425841 + 2886601 = 6279^2 + 1699^2 .

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

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, 67063 + ... + 67690.

Almost surely, 2^42312442 is an apocalyptic number.

42312442 is a deficient number, since it is larger than the sum of its proper divisors (21560954).

42312442 is a wasteful number, since it uses less digits than its factorization.

42312442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134912.

The product of its digits is 1536, while the sum is 22.

The square root of 42312442 is about 6504.8014573852. The cubic root of 42312442 is about 348.4624856784.

Adding to 42312442 its reverse (24421324), we get a palindrome (66733766).

The spelling of 42312442 in words is "forty-two million, three hundred twelve thousand, four hundred forty-two".