99142871 has 2 divisors, whose sum is σ = 99142872. Its totient is φ = 99142870.

The previous prime is 99142859. The next prime is 99142877. The reversal of 99142871 is 17824199.

It is a strong prime.

It is an emirp because it is prime and its reverse (17824199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99142871 - 2²⁶ = 32034007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99142877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49571435 + 49571436.

It is an arithmetic number, because the mean of its divisors is an integer number (49571436).

Almost surely, 2^99142871 is an apocalyptic number.

99142871 is a deficient number, since it is larger than the sum of its proper divisors (1).

99142871 is an equidigital number, since it uses as much as digits as its factorization.

99142871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The square root of 99142871 is about 9957.0513205467. The cubic root of 99142871 is about 462.8289294872.

The spelling of 99142871 in words is "ninety-nine million, one hundred forty-two thousand, eight hundred seventy-one".