104250721 has 2 divisors, whose sum is σ = 104250722. Its totient is φ = 104250720.

The previous prime is 104250689. The next prime is 104250733. The reversal of 104250721 is 127052401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91470096 + 12780625 = 9564^2 + 3575^2 .

It is a cyclic number.

It is not a de Polignac number, because 104250721 - 2⁵ = 104250689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104250692 and 104250701.

It is not a weakly prime, because it can be changed into another prime (104250821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52125360 + 52125361.

It is an arithmetic number, because the mean of its divisors is an integer number (52125361).

Almost surely, 2^104250721 is an apocalyptic number.

It is an amenable number.

104250721 is a deficient number, since it is larger than the sum of its proper divisors (1).

104250721 is an equidigital number, since it uses as much as digits as its factorization.

104250721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 104250721 is about 10210.3242357919. The cubic root of 104250721 is about 470.6445374649.

The spelling of 104250721 in words is "one hundred four million, two hundred fifty thousand, seven hundred twenty-one".