187142147 has 2 divisors, whose sum is σ = 187142148. Its totient is φ = 187142146.

The previous prime is 187142129. The next prime is 187142177. The reversal of 187142147 is 741241781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 187142147 - 2¹⁶ = 187076611 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (187142117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93571073 + 93571074.

It is an arithmetic number, because the mean of its divisors is an integer number (93571074).

Almost surely, 2^187142147 is an apocalyptic number.

187142147 is a deficient number, since it is larger than the sum of its proper divisors (1).

187142147 is an equidigital number, since it uses as much as digits as its factorization.

187142147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12544, while the sum is 35.

The square root of 187142147 is about 13679.9907529209. The cubic root of 187142147 is about 571.9927654472.

The spelling of 187142147 in words is "one hundred eighty-seven million, one hundred forty-two thousand, one hundred forty-seven".