102103999 has 2 divisors, whose sum is σ = 102104000. Its totient is φ = 102103998.

The previous prime is 102103997. The next prime is 102104021. The reversal of 102103999 is 999301201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102103999 - 2¹ = 102103997 is a prime.

It is a super-2 number, since 2×102103999² = 20850453223584002, which contains 22 as substring.

Together with 102103997, 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 (102103997) 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 as a sum of consecutive naturals, namely, 51051999 + 51052000.

It is an arithmetic number, because the mean of its divisors is an integer number (51052000).

Almost surely, 2^102103999 is an apocalyptic number.

102103999 is a deficient number, since it is larger than the sum of its proper divisors (1).

102103999 is an equidigital number, since it uses as much as digits as its factorization.

102103999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 102103999 is about 10104.6523443412. The cubic root of 102103999 is about 467.3916154702.

The spelling of 102103999 in words is "one hundred two million, one hundred three thousand, nine hundred ninety-nine".