142856994 has 16 divisors (see below), whose sum is σ = 326530368. Its totient is φ = 40816272.

The previous prime is 142856993. The next prime is 142857007. The reversal of 142856994 is 499658241.

It is not an unprimeable number, because it can be changed into a prime (142856993) by changing a digit.

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, 1700637 + ... + 1700720.

It is an arithmetic number, because the mean of its divisors is an integer number (20408148).

Almost surely, 2^142856994 is an apocalyptic number.

142856994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

142856994 is an abundant number, since it is smaller than the sum of its proper divisors (183673374).

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

142856994 is a wasteful number, since it uses less digits than its factorization.

142856994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401369.

The product of its digits is 622080, while the sum is 48.

The square root of 142856994 is about 11952.2798662013. The cubic root of 142856994 is about 522.7577770034.

The spelling of 142856994 in words is "one hundred forty-two million, eight hundred fifty-six thousand, nine hundred ninety-four".