102839155 has 4 divisors (see below), whose sum is σ = 123406992. Its totient is φ = 82271320.

The previous prime is 102839131. The next prime is 102839189. The reversal of 102839155 is 551938201.

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

It is not a de Polignac number, because 102839155 - 2⁵ = 102839123 is a prime.

It is a super-2 number, since 2×102839155² = 21151783602228050, 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 102839155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10283911 + ... + 10283920.

It is an arithmetic number, because the mean of its divisors is an integer number (30851748).

Almost surely, 2^102839155 is an apocalyptic number.

102839155 is a deficient number, since it is larger than the sum of its proper divisors (20567837).

102839155 is an equidigital number, since it uses as much as digits as its factorization.

102839155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20567836.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 102839155 is about 10140.9642046504. The cubic root of 102839155 is about 468.5106848337.

The spelling of 102839155 in words is "one hundred two million, eight hundred thirty-nine thousand, one hundred fifty-five".