142442312 has 16 divisors (see below), whose sum is σ = 278691840. Its totient is φ = 68124496.

The previous prime is 142442281. The next prime is 142442347. The reversal of 142442312 is 213244241.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386888 + ... + 387255.

It is an arithmetic number, because the mean of its divisors is an integer number (17418240).

Almost surely, 2^142442312 is an apocalyptic number.

It is an amenable number.

142442312 is a deficient number, since it is larger than the sum of its proper divisors (136249528).

142442312 is a wasteful number, since it uses less digits than its factorization.

142442312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774172 (or 774168 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 142442312 is about 11934.9198572927. The cubic root of 142442312 is about 522.2514703670.

Adding to 142442312 its reverse (213244241), we get a palindrome (355686553).

The spelling of 142442312 in words is "one hundred forty-two million, four hundred forty-two thousand, three hundred twelve".