742303 has 4 divisors (see below), whose sum is σ = 744088. Its totient is φ = 740520.

The previous prime is 742289. The next prime is 742307. The reversal of 742303 is 303247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303247 = 7 ⋅43321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742303 is a prime.

It is a Duffinian number.

742303 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742307) 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 in 3 ways as a sum of consecutive naturals, for example, 100 + ... + 1222.

It is an arithmetic number, because the mean of its divisors is an integer number (186022).

2⁷⁴²³⁰³ is an apocalyptic number.

742303 is a deficient number, since it is larger than the sum of its proper divisors (1785).

742303 is a wasteful number, since it uses less digits than its factorization.

742303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 742303 is about 861.5700784034. The cubic root of 742303 is about 90.5441519145.

The spelling of 742303 in words is "seven hundred forty-two thousand, three hundred three", and thus it is an iban number.