72106841 has 2 divisors, whose sum is σ = 72106842. Its totient is φ = 72106840.

The previous prime is 72106781. The next prime is 72106849. The reversal of 72106841 is 14860127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47554816 + 24552025 = 6896^2 + 4955^2 .

It is a cyclic number.

It is not a de Polignac number, because 72106841 - 2¹⁴ = 72090457 is a prime.

It is not a weakly prime, because it can be changed into another prime (72106849) 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, 36053420 + 36053421.

It is an arithmetic number, because the mean of its divisors is an integer number (36053421).

Almost surely, 2^72106841 is an apocalyptic number.

It is an amenable number.

72106841 is a deficient number, since it is larger than the sum of its proper divisors (1).

72106841 is an equidigital number, since it uses as much as digits as its factorization.

72106841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 72106841 is about 8491.5747067314. The cubic root of 72106841 is about 416.2224390545. Note that the first 3 decimals are identical.

Adding to 72106841 its reverse (14860127), we get a palindrome (86966968).

The spelling of 72106841 in words is "seventy-two million, one hundred six thousand, eight hundred forty-one".