742783387 has 2 divisors, whose sum is σ = 742783388. Its totient is φ = 742783386.

The previous prime is 742783369. The next prime is 742783403. The reversal of 742783387 is 783387247.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (783387247) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742783387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 742783387.

It is not a weakly prime, because it can be changed into another prime (742783337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371391693 + 371391694.

It is an arithmetic number, because the mean of its divisors is an integer number (371391694).

Almost surely, 2^742783387 is an apocalyptic number.

742783387 is a deficient number, since it is larger than the sum of its proper divisors (1).

742783387 is an equidigital number, since it uses as much as digits as its factorization.

742783387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1580544, while the sum is 49.

The square root of 742783387 is about 27254.0526711166. The cubic root of 742783387 is about 905.6367981348.

The spelling of 742783387 in words is "seven hundred forty-two million, seven hundred eighty-three thousand, three hundred eighty-seven".