142000187 has 6 divisors (see below), whose sum is σ = 165183948. Its totient is φ = 121714404.

The previous prime is 142000169. The next prime is 142000241. The reversal of 142000187 is 781000241.

It is not a de Polignac number, because 142000187 - 2¹⁰ = 141999163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142000127) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1448933 + ... + 1449030.

It is an arithmetic number, because the mean of its divisors is an integer number (27530658).

Almost surely, 2^142000187 is an apocalyptic number.

142000187 is a deficient number, since it is larger than the sum of its proper divisors (23183761).

142000187 is an equidigital number, since it uses as much as digits as its factorization.

142000187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897977 (or 2897970 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 142000187 is about 11916.3831341561. The cubic root of 142000187 is about 521.7105736412.

The spelling of 142000187 in words is "one hundred forty-two million, one hundred eighty-seven", and thus it is an aban number.