43090123 has 2 divisors, whose sum is σ = 43090124. Its totient is φ = 43090122.

The previous prime is 43090111. The next prime is 43090129. The reversal of 43090123 is 32109034.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43090123 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 43090094 and 43090103.

It is not a weakly prime, because it can be changed into another prime (43090129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21545061 + 21545062.

It is an arithmetic number, because the mean of its divisors is an integer number (21545062).

Almost surely, 2^43090123 is an apocalyptic number.

43090123 is a deficient number, since it is larger than the sum of its proper divisors (1).

43090123 is an equidigital number, since it uses as much as digits as its factorization.

43090123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 43090123 is about 6564.3067417664. The cubic root of 43090123 is about 350.5843924087.

Adding to 43090123 its reverse (32109034), we get a palindrome (75199157).

The spelling of 43090123 in words is "forty-three million, ninety thousand, one hundred twenty-three".