142231442 has 16 divisors (see below), whose sum is σ = 217046400. Its totient is φ = 69891120.

The previous prime is 142231433. The next prime is 142231451. The reversal of 142231442 is 244132241.

It is an interprime number because it is at equal distance from previous prime (142231433) and next prime (142231451).

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 7 ways as a sum of consecutive naturals, for example, 34217 + ... + 38147.

It is an arithmetic number, because the mean of its divisors is an integer number (13565400).

Almost surely, 2^142231442 is an apocalyptic number.

142231442 is a deficient number, since it is larger than the sum of its proper divisors (74814958).

142231442 is a wasteful number, since it uses less digits than its factorization.

142231442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241.

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

The square root of 142231442 is about 11926.0824246690. The cubic root of 142231442 is about 521.9936313526.

Adding to 142231442 its reverse (244132241), we get a palindrome (386363683).

The spelling of 142231442 in words is "one hundred forty-two million, two hundred thirty-one thousand, four hundred forty-two".