724417241 has 2 divisors, whose sum is σ = 724417242. Its totient is φ = 724417240.

The previous prime is 724417193. The next prime is 724417261. The reversal of 724417241 is 142714427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 724417225 + 16 = 26915^2 + 4^2 .

It is an emirp because it is prime and its reverse (142714427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 724417241 - 2¹⁸ = 724155097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 724417198 and 724417207.

It is not a weakly prime, because it can be changed into another prime (724417261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362208620 + 362208621.

It is an arithmetic number, because the mean of its divisors is an integer number (362208621).

Almost surely, 2^724417241 is an apocalyptic number.

It is an amenable number.

724417241 is a deficient number, since it is larger than the sum of its proper divisors (1).

724417241 is an equidigital number, since it uses as much as digits as its factorization.

724417241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12544, while the sum is 32.

The square root of 724417241 is about 26915.0002972320. Note that the first 3 decimals coincide. The cubic root of 724417241 is about 898.1101252503.

The spelling of 724417241 in words is "seven hundred twenty-four million, four hundred seventeen thousand, two hundred forty-one".