742580849 has 2 divisors, whose sum is σ = 742580850. Its totient is φ = 742580848.

The previous prime is 742580821. The next prime is 742580863. The reversal of 742580849 is 948085247.

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., 655718449 + 86862400 = 25607^2 + 9320^2 .

It is an emirp because it is prime and its reverse (948085247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 742580849 - 2⁸ = 742580593 is a prime.

It is not a weakly prime, because it can be changed into another prime (742585849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371290424 + 371290425.

It is an arithmetic number, because the mean of its divisors is an integer number (371290425).

Almost surely, 2^742580849 is an apocalyptic number.

It is an amenable number.

742580849 is a deficient number, since it is larger than the sum of its proper divisors (1).

742580849 is an equidigital number, since it uses as much as digits as its factorization.

742580849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 742580849 is about 27250.3366768192. The cubic root of 742580849 is about 905.5544760010.

The spelling of 742580849 in words is "seven hundred forty-two million, five hundred eighty thousand, eight hundred forty-nine".