102143959 has 2 divisors, whose sum is σ = 102143960. Its totient is φ = 102143958.

The previous prime is 102143957. The next prime is 102144001. The reversal of 102143959 is 959341201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102143959 - 2¹ = 102143957 is a prime.

Together with 102143957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102143953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51071979 + 51071980.

It is an arithmetic number, because the mean of its divisors is an integer number (51071980).

Almost surely, 2^102143959 is an apocalyptic number.

102143959 is a deficient number, since it is larger than the sum of its proper divisors (1).

102143959 is an equidigital number, since it uses as much as digits as its factorization.

102143959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 102143959 is about 10106.6294579350. The cubic root of 102143959 is about 467.4525811952.

The spelling of 102143959 in words is "one hundred two million, one hundred forty-three thousand, nine hundred fifty-nine".