102919 has 4 divisors (see below), whose sum is σ = 104040. Its totient is φ = 101800.

The previous prime is 102913. The next prime is 102929. The reversal of 102919 is 919201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102919 - 2³ = 102911 is a prime.

It is a super-2 number, since 2×102919² = 21184641122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409 + ... + 610.

It is an arithmetic number, because the mean of its divisors is an integer number (26010).

2¹⁰²⁹¹⁹ is an apocalyptic number.

102919 is a deficient number, since it is larger than the sum of its proper divisors (1121).

102919 is a wasteful number, since it uses less digits than its factorization.

102919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 102919 is about 320.8099125651. The cubic root of 102919 is about 46.8631905065.

The spelling of 102919 in words is "one hundred two thousand, nine hundred nineteen".