142100179987 has 2 divisors, whose sum is σ = 142100179988. Its totient is φ = 142100179986.

The previous prime is 142100179981. The next prime is 142100179999. The reversal of 142100179987 is 789971001241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142100179987 - 2¹⁹ = 142099655699 is a prime.

It is a super-2 number, since 2×142100179987² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142100179987.

It is not a weakly prime, because it can be changed into another prime (142100179981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71050089993 + 71050089994.

It is an arithmetic number, because the mean of its divisors is an integer number (71050089994).

Almost surely, 2^142100179987 is an apocalyptic number.

142100179987 is a deficient number, since it is larger than the sum of its proper divisors (1).

142100179987 is an equidigital number, since it uses as much as digits as its factorization.

142100179987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 49.

The spelling of 142100179987 in words is "one hundred forty-two billion, one hundred million, one hundred seventy-nine thousand, nine hundred eighty-seven".