104123881 has 2 divisors, whose sum is σ = 104123882. Its totient is φ = 104123880.

The previous prime is 104123879. The next prime is 104123939. The reversal of 104123881 is 188321401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64320400 + 39803481 = 8020^2 + 6309^2 .

It is a cyclic number.

It is not a de Polignac number, because 104123881 - 2¹ = 104123879 is a prime.

It is a super-2 number, since 2×104123881² = 21683565189004322, which contains 22 as substring.

Together with 104123879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (104123281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52061940 + 52061941.

It is an arithmetic number, because the mean of its divisors is an integer number (52061941).

Almost surely, 2^104123881 is an apocalyptic number.

It is an amenable number.

104123881 is a deficient number, since it is larger than the sum of its proper divisors (1).

104123881 is an equidigital number, since it uses as much as digits as its factorization.

104123881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 104123881 is about 10204.1109852843. The cubic root of 104123881 is about 470.4535850523.

The spelling of 104123881 in words is "one hundred four million, one hundred twenty-three thousand, eight hundred eighty-one".