742903 has 4 divisors (see below), whose sum is σ = 849040. Its totient is φ = 636768.

The previous prime is 742897. The next prime is 742909. The reversal of 742903 is 309247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309247 = 17 ⋅18191.

It is an interprime number because it is at equal distance from previous prime (742897) and next prime (742909).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53058 + ... + 53071.

It is an arithmetic number, because the mean of its divisors is an integer number (212260).

2⁷⁴²⁹⁰³ is an apocalyptic number.

742903 is a deficient number, since it is larger than the sum of its proper divisors (106137).

742903 is a wasteful number, since it uses less digits than its factorization.

742903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106136.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 742903 is about 861.9182095768. The cubic root of 742903 is about 90.5685408143.

The spelling of 742903 in words is "seven hundred forty-two thousand, nine hundred three".