742838773 has 2 divisors, whose sum is σ = 742838774. Its totient is φ = 742838772.

The previous prime is 742838753. The next prime is 742838777. The reversal of 742838773 is 377838247.

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., 740220849 + 2617924 = 27207^2 + 1618^2 .

It is a cyclic number.

It is not a de Polignac number, because 742838773 - 2¹³ = 742830581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742838777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371419386 + 371419387.

It is an arithmetic number, because the mean of its divisors is an integer number (371419387).

Almost surely, 2^742838773 is an apocalyptic number.

It is an amenable number.

742838773 is a deficient number, since it is larger than the sum of its proper divisors (1).

742838773 is an equidigital number, since it uses as much as digits as its factorization.

742838773 is an evil number, because the sum of its binary digits is even.

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

The square root of 742838773 is about 27255.0687579393. The cubic root of 742838773 is about 905.6593073229.

The spelling of 742838773 in words is "seven hundred forty-two million, eight hundred thirty-eight thousand, seven hundred seventy-three".