142871586 has 48 divisors (see below), whose sum is σ = 337569120. Its totient is φ = 39960960.

The previous prime is 142871581. The next prime is 142871647. The reversal of 142871586 is 685178241.

It is not an unprimeable number, because it can be changed into a prime (142871581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4750 + ... + 17558.

It is an arithmetic number, because the mean of its divisors is an integer number (7032690).

Almost surely, 2^142871586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142871586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168784560).

142871586 is an abundant number, since it is smaller than the sum of its proper divisors (194697534).

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

142871586 is a wasteful number, since it uses less digits than its factorization.

142871586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12851 (or 12838 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 142871586 is about 11952.8902780876. The cubic root of 142871586 is about 522.7755752727.

The spelling of 142871586 in words is "one hundred forty-two million, eight hundred seventy-one thousand, five hundred eighty-six".