742775069 has 2 divisors, whose sum is σ = 742775070. Its totient is φ = 742775068.

The previous prime is 742775023. The next prime is 742775081. The reversal of 742775069 is 960577247.

742775069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 681732100 + 61042969 = 26110^2 + 7813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742775069 is a prime.

It is a super-2 number, since 2×742775069² = 1103429606255909522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742775009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371387534 + 371387535.

It is an arithmetic number, because the mean of its divisors is an integer number (371387535).

Almost surely, 2^742775069 is an apocalyptic number.

It is an amenable number.

742775069 is a deficient number, since it is larger than the sum of its proper divisors (1).

742775069 is an equidigital number, since it uses as much as digits as its factorization.

742775069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 47.

The square root of 742775069 is about 27253.9000695313. The cubic root of 742775069 is about 905.6334175552.

The spelling of 742775069 in words is "seven hundred forty-two million, seven hundred seventy-five thousand, sixty-nine".