142858891 has 12 divisors (see below), whose sum is σ = 172315632. Its totient is φ = 116003664.

The previous prime is 142858879. The next prime is 142858921. The reversal of 142858891 is 198858241.

It is a happy number.

It is not a de Polignac number, because 142858891 - 2⁷ = 142858763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142858811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25740 + ... + 30793.

It is an arithmetic number, because the mean of its divisors is an integer number (14359636).

Almost surely, 2^142858891 is an apocalyptic number.

142858891 is a deficient number, since it is larger than the sum of its proper divisors (29456741).

142858891 is an equidigital number, since it uses as much as digits as its factorization.

142858891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56578 (or 56559 counting only the distinct ones).

The product of its digits is 184320, while the sum is 46.

The square root of 142858891 is about 11952.3592231827. The cubic root of 142858891 is about 522.7600908957.

The spelling of 142858891 in words is "one hundred forty-two million, eight hundred fifty-eight thousand, eight hundred ninety-one".