742723691 has 2 divisors, whose sum is σ = 742723692. Its totient is φ = 742723690.

The previous prime is 742723679. The next prime is 742723697. The reversal of 742723691 is 196327247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 742723691 - 2¹⁴ = 742707307 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (742723697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371361845 + 371361846.

It is an arithmetic number, because the mean of its divisors is an integer number (371361846).

Almost surely, 2^742723691 is an apocalyptic number.

742723691 is a deficient number, since it is larger than the sum of its proper divisors (1).

742723691 is an equidigital number, since it uses as much as digits as its factorization.

742723691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 41.

The square root of 742723691 is about 27252.9574725386. The cubic root of 742723691 is about 905.6125360850.

The spelling of 742723691 in words is "seven hundred forty-two million, seven hundred twenty-three thousand, six hundred ninety-one".