142387459191 has 24 divisors (see below), whose sum is σ = 206340320160. Its totient is φ = 94616203776.

The previous prime is 142387459189. The next prime is 142387459199. The reversal of 142387459191 is 191954783241.

142387459191 is a `hidden beast` number, since 1 + 4 + 23 + 87 + 459 + 1 + 91 = 666.

142387459191 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 142387459191 - 2¹ = 142387459189 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142387459199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7800211 + ... + 7818443.

It is an arithmetic number, because the mean of its divisors is an integer number (8597513340).

Almost surely, 2^142387459191 is an apocalyptic number.

142387459191 is a deficient number, since it is larger than the sum of its proper divisors (63952860969).

142387459191 is a wasteful number, since it uses less digits than its factorization.

142387459191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21015 (or 21012 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 142387459191 in words is "one hundred forty-two billion, three hundred eighty-seven million, four hundred fifty-nine thousand, one hundred ninety-one".