142978188 has 24 divisors (see below), whose sum is σ = 333921280. Its totient is φ = 47615760.

The previous prime is 142978163. The next prime is 142978217. The reversal of 142978188 is 881879241.

It is a super-4 number, since 4×142978188⁴ (a number of 34 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9933 + ... + 19611.

Almost surely, 2^142978188 is an apocalyptic number.

It is an amenable number.

142978188 is an abundant number, since it is smaller than the sum of its proper divisors (190943092).

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

142978188 is a wasteful number, since it uses less digits than its factorization.

142978188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10917 (or 10915 counting only the distinct ones).

The product of its digits is 258048, while the sum is 48.

The square root of 142978188 is about 11957.3487027852. The cubic root of 142978188 is about 522.9055639539.

The spelling of 142978188 in words is "one hundred forty-two million, nine hundred seventy-eight thousand, one hundred eighty-eight".