104134721 has 2 divisors, whose sum is σ = 104134722. Its totient is φ = 104134720.

The previous prime is 104134699. The next prime is 104134729. The reversal of 104134721 is 127431401.

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., 59845696 + 44289025 = 7736^2 + 6655^2 .

It is a cyclic number.

It is not a de Polignac number, because 104134721 - 2¹⁴ = 104118337 is a prime.

It is not a weakly prime, because it can be changed into another prime (104134729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52067360 + 52067361.

It is an arithmetic number, because the mean of its divisors is an integer number (52067361).

Almost surely, 2^104134721 is an apocalyptic number.

It is an amenable number.

104134721 is a deficient number, since it is larger than the sum of its proper divisors (1).

104134721 is an equidigital number, since it uses as much as digits as its factorization.

104134721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 104134721 is about 10204.6421299328. The cubic root of 104134721 is about 470.4699102854.

The spelling of 104134721 in words is "one hundred four million, one hundred thirty-four thousand, seven hundred twenty-one".