741721 has 2 divisors, whose sum is σ = 741722. Its totient is φ = 741720.

The previous prime is 741709. The next prime is 741781. The reversal of 741721 is 127147.

741721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 741321 + 400 = 861^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 741721 - 2⁷ = 741593 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 741692 and 741701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (741781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370860 + 370861.

It is an arithmetic number, because the mean of its divisors is an integer number (370861).

2⁷⁴¹⁷²¹ is an apocalyptic number.

It is an amenable number.

741721 is a deficient number, since it is larger than the sum of its proper divisors (1).

741721 is an equidigital number, since it uses as much as digits as its factorization.

741721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 392, while the sum is 22.

The square root of 741721 is about 861.2322567113. The cubic root of 741721 is about 90.5204821217.

Adding to 741721 its reverse (127147), we get a palindrome (868868).

The spelling of 741721 in words is "seven hundred forty-one thousand, seven hundred twenty-one", and thus it is an iban number.