142357891 has 8 divisors (see below), whose sum is σ = 153498240. Its totient is φ = 131244672.

The previous prime is 142357883. The next prime is 142357909. The reversal of 142357891 is 198753241.

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

It is not a de Polignac number, because 142357891 - 2³ = 142357883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142357801) 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 7 ways as a sum of consecutive naturals, for example, 4875 + ... + 17563.

It is an arithmetic number, because the mean of its divisors is an integer number (19187280).

Almost surely, 2^142357891 is an apocalyptic number.

142357891 is a deficient number, since it is larger than the sum of its proper divisors (11140349).

142357891 is a wasteful number, since it uses less digits than its factorization.

142357891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13565.

The product of its digits is 60480, while the sum is 40.

The square root of 142357891 is about 11931.3826105779. The cubic root of 142357891 is about 522.1482760664.

The spelling of 142357891 in words is "one hundred forty-two million, three hundred fifty-seven thousand, eight hundred ninety-one".