742743 has 8 divisors (see below), whose sum is σ = 1100400. Its totient is φ = 495144.

The previous prime is 742723. The next prime is 742757. The reversal of 742743 is 347247.

It is not a de Polignac number, because 742743 - 2⁵ = 742711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 27509 = 742743 / (7 + 4 + 2 + 7 + 4 + 3).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 742743.

It is not an unprimeable number, because it can be changed into a prime (742723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13728 + ... + 13781.

It is an arithmetic number, because the mean of its divisors is an integer number (137550).

2⁷⁴²⁷⁴³ is an apocalyptic number.

742743 is a deficient number, since it is larger than the sum of its proper divisors (357657).

742743 is a wasteful number, since it uses less digits than its factorization.

742743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27518 (or 27512 counting only the distinct ones).

The product of its digits is 4704, while the sum is 27.

The square root of 742743 is about 861.8253883473. The cubic root of 742743 is about 90.5620383921.

It can be divided in two parts, 742 and 743, that added together give a triangular number (1485 = T₅₄).

The spelling of 742743 in words is "seven hundred forty-two thousand, seven hundred forty-three", and thus it is an iban number.