142111442 has 16 divisors (see below), whose sum is σ = 232794432. Its totient is φ = 64527120.

The previous prime is 142111439. The next prime is 142111451. The reversal of 142111442 is 244111241.

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, 21683 + ... + 27465.

It is an arithmetic number, because the mean of its divisors is an integer number (14549652).

Almost surely, 2^142111442 is an apocalyptic number.

142111442 is a deficient number, since it is larger than the sum of its proper divisors (90682990).

142111442 is a wasteful number, since it uses less digits than its factorization.

142111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6913.

The product of its digits is 256, while the sum is 20.

The square root of 142111442 is about 11921.0503731844. The cubic root of 142111442 is about 521.8467888559.

Adding to 142111442 its reverse (244111241), we get a palindrome (386222683).

The spelling of 142111442 in words is "one hundred forty-two million, one hundred eleven thousand, four hundred forty-two".