142987143 has 16 divisors (see below), whose sum is σ = 205681280. Its totient is φ = 87835104.

The previous prime is 142987127. The next prime is 142987151. The reversal of 142987143 is 341789241.

142987143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142987143 - 2⁴ = 142987127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142987543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21180 + ... + 27102.

It is an arithmetic number, because the mean of its divisors is an integer number (12855080).

Almost surely, 2^142987143 is an apocalyptic number.

142987143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142987143 is a deficient number, since it is larger than the sum of its proper divisors (62694137).

142987143 is a wasteful number, since it uses less digits than its factorization.

142987143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6558.

The product of its digits is 48384, while the sum is 39.

The square root of 142987143 is about 11957.7231528414. The cubic root of 142987143 is about 522.9164805877.

The spelling of 142987143 in words is "one hundred forty-two million, nine hundred eighty-seven thousand, one hundred forty-three".