742324409 has 2 divisors, whose sum is σ = 742324410. Its totient is φ = 742324408.

The previous prime is 742324381. The next prime is 742324411. The reversal of 742324409 is 904423247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 676260025 + 66064384 = 26005^2 + 8128^2 .

It is a cyclic number.

It is not a de Polignac number, because 742324409 - 2⁸ = 742324153 is a prime.

It is a Sophie Germain prime.

Together with 742324411, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (742321409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371162204 + 371162205.

It is an arithmetic number, because the mean of its divisors is an integer number (371162205).

Almost surely, 2^742324409 is an apocalyptic number.

It is an amenable number.

742324409 is a deficient number, since it is larger than the sum of its proper divisors (1).

742324409 is an equidigital number, since it uses as much as digits as its factorization.

742324409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 742324409 is about 27245.6310075579. The cubic root of 742324409 is about 905.4502237719.

The spelling of 742324409 in words is "seven hundred forty-two million, three hundred twenty-four thousand, four hundred nine".