22740043 has 2 divisors, whose sum is σ = 22740044. Its totient is φ = 22740042.

The previous prime is 22739993. The next prime is 22740061. The reversal of 22740043 is 34004722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22740043 is a prime.

It is a super-4 number, since 4×22740043⁴ (a number of 31 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22739996 and 22740023.

It is not a weakly prime, because it can be changed into another prime (22740073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11370021 + 11370022.

It is an arithmetic number, because the mean of its divisors is an integer number (11370022).

Almost surely, 2^22740043 is an apocalyptic number.

22740043 is a deficient number, since it is larger than the sum of its proper divisors (1).

22740043 is an equidigital number, since it uses as much as digits as its factorization.

22740043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 22740043 is about 4768.6521156402. The cubic root of 22740043 is about 283.3112110371.

Adding to 22740043 its reverse (34004722), we get a palindrome (56744765).

The spelling of 22740043 in words is "twenty-two million, seven hundred forty thousand, forty-three".