742356739 has 2 divisors, whose sum is σ = 742356740. Its totient is φ = 742356738.

The previous prime is 742356737. The next prime is 742356757. The reversal of 742356739 is 937653247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 742356739 - 2¹ = 742356737 is a prime.

Together with 742356737, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (742356737) 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, 371178369 + 371178370.

It is an arithmetic number, because the mean of its divisors is an integer number (371178370).

Almost surely, 2^742356739 is an apocalyptic number.

742356739 is a deficient number, since it is larger than the sum of its proper divisors (1).

742356739 is an equidigital number, since it uses as much as digits as its factorization.

742356739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 46.

The square root of 742356739 is about 27246.2243072320. The cubic root of 742356739 is about 905.4633684206.

The spelling of 742356739 in words is "seven hundred forty-two million, three hundred fifty-six thousand, seven hundred thirty-nine".