742393 has 2 divisors, whose sum is σ = 742394. Its totient is φ = 742392.

The previous prime is 742381. The next prime is 742409. The reversal of 742393 is 393247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480249 + 262144 = 693^2 + 512^2 .

It is an emirp because it is prime and its reverse (393247) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742393 is a prime.

It is a super-2 number, since 2×742393² = 1102294732898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (742333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371196 + 371197.

It is an arithmetic number, because the mean of its divisors is an integer number (371197).

2⁷⁴²³⁹³ is an apocalyptic number.

It is an amenable number.

742393 is a deficient number, since it is larger than the sum of its proper divisors (1).

742393 is an equidigital number, since it uses as much as digits as its factorization.

742393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The square root of 742393 is about 861.6223070464. The cubic root of 742393 is about 90.5478110871.

The spelling of 742393 in words is "seven hundred forty-two thousand, three hundred ninety-three".