142842857 has 8 divisors (see below), whose sum is σ = 157821696. Its totient is φ = 128594752.

The previous prime is 142842851. The next prime is 142842877. The reversal of 142842857 is 758248241.

142842857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142842857 - 2²² = 138648553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142842851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182273 + ... + 183054.

It is an arithmetic number, because the mean of its divisors is an integer number (19727712).

Almost surely, 2^142842857 is an apocalyptic number.

142842857 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

142842857 is a deficient number, since it is larger than the sum of its proper divisors (14978839).

142842857 is a wasteful number, since it uses less digits than its factorization.

142842857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365367.

The product of its digits is 143360, while the sum is 41.

The square root of 142842857 is about 11951.6884581217. The cubic root of 142842857 is about 522.7405325543.

The spelling of 142842857 in words is "one hundred forty-two million, eight hundred forty-two thousand, eight hundred fifty-seven".