142140142 has 8 divisors (see below), whose sum is σ = 215166600. Its totient is φ = 70417944.

The previous prime is 142140139. The next prime is 142140151. The reversal of 142140142 is 241041241.

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

It is a congruent number.

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, 325792 + ... + 326227.

It is an arithmetic number, because the mean of its divisors is an integer number (26895825).

Almost surely, 2^142140142 is an apocalyptic number.

142140142 is a deficient number, since it is larger than the sum of its proper divisors (73026458).

142140142 is a wasteful number, since it uses less digits than its factorization.

142140142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652130.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 142140142 is about 11922.2540654022. The cubic root of 142140142 is about 521.8819162051.

Adding to 142140142 its reverse (241041241), we get a palindrome (383181383).

The spelling of 142140142 in words is "one hundred forty-two million, one hundred forty thousand, one hundred forty-two".