142987870 has 16 divisors (see below), whose sum is σ = 257791248. Its totient is φ = 57103360.

The previous prime is 142987847. The next prime is 142987891. The reversal of 142987870 is 78789241.

It is a self number, because there is not a number n which added to its sum of digits gives 142987870.

It is a congruent number.

It is an unprimeable number.

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, 4744 + ... + 17563.

It is an arithmetic number, because the mean of its divisors is an integer number (16111953).

Almost surely, 2^142987870 is an apocalyptic number.

142987870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142987870 is a deficient number, since it is larger than the sum of its proper divisors (114803378).

142987870 is a wasteful number, since it uses less digits than its factorization.

142987870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22955.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 142987870 is about 11957.7535515664. The cubic root of 142987870 is about 522.9173668204.

The spelling of 142987870 in words is "one hundred forty-two million, nine hundred eighty-seven thousand, eight hundred seventy".