142940186 has 16 divisors (see below), whose sum is σ = 220062528. Its totient is φ = 69592800.

The previous prime is 142940167. The next prime is 142940191. The reversal of 142940186 is 681049241.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51371 + ... + 54081.

It is an arithmetic number, because the mean of its divisors is an integer number (13753908).

Almost surely, 2^142940186 is an apocalyptic number.

142940186 is a deficient number, since it is larger than the sum of its proper divisors (77122342).

142940186 is a wasteful number, since it uses less digits than its factorization.

142940186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397.

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

The square root of 142940186 is about 11955.7595325433. The cubic root of 142940186 is about 522.8592323693.

The spelling of 142940186 in words is "one hundred forty-two million, nine hundred forty thousand, one hundred eighty-six".