742607791 has 2 divisors, whose sum is σ = 742607792. Its totient is φ = 742607790.

The previous prime is 742607779. The next prime is 742607861. The reversal of 742607791 is 197706247.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742607791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742607711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371303895 + 371303896.

It is an arithmetic number, because the mean of its divisors is an integer number (371303896).

Almost surely, 2^742607791 is an apocalyptic number.

742607791 is a deficient number, since it is larger than the sum of its proper divisors (1).

742607791 is an equidigital number, since it uses as much as digits as its factorization.

742607791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 742607791 is about 27250.8310148516. The cubic root of 742607791 is about 905.5654275149.

The spelling of 742607791 in words is "seven hundred forty-two million, six hundred seven thousand, seven hundred ninety-one".