4540043 has 8 divisors (see below), whose sum is σ = 4725120. Its totient is φ = 4357440.

The previous prime is 4540027. The next prime is 4540049. The reversal of 4540043 is 3400454.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4540043 - 2⁴ = 4540027 is a prime.

It is a super-2 number, since 2×4540043² = 41223980883698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4539997 and 4540024.

It is not an unprimeable number, because it can be changed into a prime (4540049) 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, 3713 + ... + 4781.

It is an arithmetic number, because the mean of its divisors is an integer number (590640).

Almost surely, 2^4540043 is an apocalyptic number.

4540043 is a deficient number, since it is larger than the sum of its proper divisors (185077).

4540043 is a wasteful number, since it uses less digits than its factorization.

4540043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 4540043 is about 2130.7376656923. The cubic root of 4540043 is about 165.5846173293.

Adding to 4540043 its reverse (3400454), we get a palindrome (7940497).

The spelling of 4540043 in words is "four million, five hundred forty thousand, forty-three".