142031886 has 8 divisors (see below), whose sum is σ = 284063784. Its totient is φ = 47343960.

The previous prime is 142031861. The next prime is 142031887. The reversal of 142031886 is 688130241.

142031886 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.

142031886 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142031887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11835985 + ... + 11835996.

It is an arithmetic number, because the mean of its divisors is an integer number (35507973).

Almost surely, 2^142031886 is an apocalyptic number.

142031886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

142031886 is a wasteful number, since it uses less digits than its factorization.

142031886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23671986.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 142031886 is about 11917.7131195544. The cubic root of 142031886 is about 521.7493916019.

The spelling of 142031886 in words is "one hundred forty-two million, thirty-one thousand, eight hundred eighty-six".