72104273 has 2 divisors, whose sum is σ = 72104274. Its totient is φ = 72104272.

The previous prime is 72104269. The next prime is 72104299. The reversal of 72104273 is 37240127.

It is an a-pointer prime, because the next prime (72104299) can be obtained adding 72104273 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68674369 + 3429904 = 8287^2 + 1852^2 .

It is a cyclic number.

It is not a de Polignac number, because 72104273 - 2² = 72104269 is a prime.

It is not a weakly prime, because it can be changed into another prime (72104173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36052136 + 36052137.

It is an arithmetic number, because the mean of its divisors is an integer number (36052137).

Almost surely, 2^72104273 is an apocalyptic number.

It is an amenable number.

72104273 is a deficient number, since it is larger than the sum of its proper divisors (1).

72104273 is an equidigital number, since it uses as much as digits as its factorization.

72104273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 72104273 is about 8491.4234966818. The cubic root of 72104273 is about 416.2174979056.

The spelling of 72104273 in words is "seventy-two million, one hundred four thousand, two hundred seventy-three".