104782121 has 8 divisors (see below), whose sum is σ = 106181064. Its totient is φ = 103392640.

The previous prime is 104782091. The next prime is 104782123. The reversal of 104782121 is 121287401.

It can be written as a sum of positive squares in 4 ways, for example, as 59892121 + 44890000 = 7739^2 + 6700^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 104782121 - 2¹⁴ = 104765737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104782123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21491 + ... + 25911.

It is an arithmetic number, because the mean of its divisors is an integer number (13272633).

Almost surely, 2^104782121 is an apocalyptic number.

It is an amenable number.

104782121 is a deficient number, since it is larger than the sum of its proper divisors (1398943).

104782121 is a wasteful number, since it uses less digits than its factorization.

104782121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 104782121 is about 10236.3138384870. The cubic root of 104782121 is about 471.4428589093.

The spelling of 104782121 in words is "one hundred four million, seven hundred eighty-two thousand, one hundred twenty-one".