142940168 has 16 divisors (see below), whose sum is σ = 306300480. Its totient is φ = 61260048.

The previous prime is 142940167. The next prime is 142940191. The reversal of 142940168 is 861049241.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (142940167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276196 + ... + 1276307.

It is an arithmetic number, because the mean of its divisors is an integer number (19143780).

Almost surely, 2^142940168 is an apocalyptic number.

It is an amenable number.

142940168 is an abundant number, since it is smaller than the sum of its proper divisors (163360312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142940168 is a wasteful number, since it uses less digits than its factorization.

142940168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552516 (or 2552512 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 142940168 is about 11955.7587797680. The cubic root of 142940168 is about 522.8592104220.

The spelling of 142940168 in words is "one hundred forty-two million, nine hundred forty thousand, one hundred sixty-eight".