104781121 has 4 divisors (see below), whose sum is σ = 105484500. Its totient is φ = 104077744.

The previous prime is 104781113. The next prime is 104781163. The reversal of 104781121 is 121187401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121187401 = 31 ⋅3909271.

It can be written as a sum of positive squares in 2 ways, for example, as 39753025 + 65028096 = 6305^2 + 8064^2 .

It is a cyclic number.

It is not a de Polignac number, because 104781121 - 2³ = 104781113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104781191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351466 + ... + 351763.

It is an arithmetic number, because the mean of its divisors is an integer number (26371125).

Almost surely, 2^104781121 is an apocalyptic number.

It is an amenable number.

104781121 is a deficient number, since it is larger than the sum of its proper divisors (703379).

104781121 is an equidigital number, since it uses as much as digits as its factorization.

104781121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703378.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 104781121 is about 10236.2649926621. The cubic root of 104781121 is about 471.4413591485.

The spelling of 104781121 in words is "one hundred four million, seven hundred eighty-one thousand, one hundred twenty-one".