342743 has 4 divisors (see below), whose sum is σ = 344448. Its totient is φ = 341040.

The previous prime is 342733. The next prime is 342757. The reversal of 342743 is 347243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347243 = 13 ⋅26711.

It is a cyclic number.

It is not a de Polignac number, because 342743 - 2⁶ = 342679 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 (342733) 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, 503 + ... + 968.

It is an arithmetic number, because the mean of its divisors is an integer number (86112).

2³⁴²⁷⁴³ is an apocalyptic number.

342743 is a deficient number, since it is larger than the sum of its proper divisors (1705).

342743 is a wasteful number, since it uses less digits than its factorization.

342743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704.

The product of its digits is 2016, while the sum is 23.

The square root of 342743 is about 585.4425676358. The cubic root of 342743 is about 69.9825126385.

Adding to 342743 its reverse (347243), we get a palindrome (689986).

The spelling of 342743 in words is "three hundred forty-two thousand, seven hundred forty-three", and thus it is an iban number.