142878930 has 32 divisors (see below), whose sum is σ = 343224000. Its totient is φ = 38066112.

The previous prime is 142878929. The next prime is 142878971. The reversal of 142878930 is 39878241.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61836 + ... + 64104.

It is an arithmetic number, because the mean of its divisors is an integer number (10725750).

Almost surely, 2^142878930 is an apocalyptic number.

142878930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142878930 is an abundant number, since it is smaller than the sum of its proper divisors (200345070).

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

142878930 is a wasteful number, since it uses less digits than its factorization.

142878930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4378.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 142878930 is about 11953.1974801724. The cubic root of 142878930 is about 522.7845324959.

The spelling of 142878930 in words is "one hundred forty-two million, eight hundred seventy-eight thousand, nine hundred thirty".