104120981 has 2 divisors, whose sum is σ = 104120982. Its totient is φ = 104120980.

The previous prime is 104120963. The next prime is 104120983. The reversal of 104120981 is 189021401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77598481 + 26522500 = 8809^2 + 5150^2 .

It is a cyclic number.

It is not a de Polignac number, because 104120981 - 2¹⁸ = 103858837 is a prime.

It is a super-2 number, since 2×104120981² = 21682357368804722, which contains 22 as substring.

Together with 104120983, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104120981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104120983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52060490 + 52060491.

It is an arithmetic number, because the mean of its divisors is an integer number (52060491).

Almost surely, 2^104120981 is an apocalyptic number.

It is an amenable number.

104120981 is a deficient number, since it is larger than the sum of its proper divisors (1).

104120981 is an equidigital number, since it uses as much as digits as its factorization.

104120981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 104120981 is about 10203.9688847036. The cubic root of 104120981 is about 470.4492174085.

It can be divided in two parts, 1041 and 20981, that added together give a palindrome (22022).

The spelling of 104120981 in words is "one hundred four million, one hundred twenty thousand, nine hundred eighty-one".