43220423123 has 2 divisors, whose sum is σ = 43220423124. Its totient is φ = 43220423122.

The previous prime is 43220423119. The next prime is 43220423153. The reversal of 43220423123 is 32132402234.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43220423123 - 2² = 43220423119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43220423092 and 43220423101.

It is not a weakly prime, because it can be changed into another prime (43220423153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21610211561 + 21610211562.

It is an arithmetic number, because the mean of its divisors is an integer number (21610211562).

Almost surely, 2^43220423123 is an apocalyptic number.

43220423123 is a deficient number, since it is larger than the sum of its proper divisors (1).

43220423123 is an equidigital number, since it uses as much as digits as its factorization.

43220423123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 43220423123 its reverse (32132402234), we get a palindrome (75352825357).

The spelling of 43220423123 in words is "forty-three billion, two hundred twenty million, four hundred twenty-three thousand, one hundred twenty-three".