7442543 has 4 divisors (see below), whose sum is σ = 7448760. Its totient is φ = 7436328.

The previous prime is 7442521. The next prime is 7442551. The reversal of 7442543 is 3452447.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3452447 = 317 ⋅10891.

It is a cyclic number.

It is not a de Polignac number, because 7442543 - 2¹² = 7438447 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7442563) 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, 680 + ... + 3917.

It is an arithmetic number, because the mean of its divisors is an integer number (1862190).

Almost surely, 2^7442543 is an apocalyptic number.

7442543 is a deficient number, since it is larger than the sum of its proper divisors (6217).

7442543 is a wasteful number, since it uses less digits than its factorization.

7442543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6216.

The product of its digits is 13440, while the sum is 29.

The square root of 7442543 is about 2728.1024540878. The cubic root of 7442543 is about 195.2422411355.

The spelling of 7442543 in words is "seven million, four hundred forty-two thousand, five hundred forty-three".