142739886 has 32 divisors (see below), whose sum is σ = 301685760. Its totient is φ = 44931744.

The previous prime is 142739869. The next prime is 142739897. The reversal of 142739886 is 688937241.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4356 + ... + 17448.

It is an arithmetic number, because the mean of its divisors is an integer number (9427680).

Almost surely, 2^142739886 is an apocalyptic number.

142739886 is an abundant number, since it is smaller than the sum of its proper divisors (158945874).

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

142739886 is a wasteful number, since it uses less digits than its factorization.

142739886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13200.

The product of its digits is 580608, while the sum is 48.

The square root of 142739886 is about 11947.3798801243. The cubic root of 142739886 is about 522.6148931960.

The spelling of 142739886 in words is "one hundred forty-two million, seven hundred thirty-nine thousand, eight hundred eighty-six".