742243 has 2 divisors, whose sum is σ = 742244. Its totient is φ = 742242.

The previous prime is 742241. The next prime is 742253. The reversal of 742243 is 342247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 742243 - 2¹ = 742241 is a prime.

Together with 742241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (742241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371121 + 371122.

It is an arithmetic number, because the mean of its divisors is an integer number (371122).

2⁷⁴²²⁴³ is an apocalyptic number.

742243 is a deficient number, since it is larger than the sum of its proper divisors (1).

742243 is an equidigital number, since it uses as much as digits as its factorization.

742243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 22.

The square root of 742243 is about 861.5352575490. The cubic root of 742243 is about 90.5417123018.

The spelling of 742243 in words is "seven hundred forty-two thousand, two hundred forty-three", and thus it is an iban number.