142009187 has 2 divisors, whose sum is σ = 142009188. Its totient is φ = 142009186.

The previous prime is 142009181. The next prime is 142009193. The reversal of 142009187 is 781900241.

It is a balanced prime because it is at equal distance from previous prime (142009181) and next prime (142009193).

It is a cyclic number.

It is not a de Polignac number, because 142009187 - 2⁸ = 142008931 is a prime.

It is not a weakly prime, because it can be changed into another prime (142009181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71004593 + 71004594.

It is an arithmetic number, because the mean of its divisors is an integer number (71004594).

Almost surely, 2^142009187 is an apocalyptic number.

142009187 is a deficient number, since it is larger than the sum of its proper divisors (1).

142009187 is an equidigital number, since it uses as much as digits as its factorization.

142009187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 142009187 is about 11916.7607595353. The cubic root of 142009187 is about 521.7215954482.

The spelling of 142009187 in words is "one hundred forty-two million, nine thousand, one hundred eighty-seven".