426442123 has 2 divisors, whose sum is σ = 426442124. Its totient is φ = 426442122.

The previous prime is 426442097. The next prime is 426442151. The reversal of 426442123 is 321244624.

It is an a-pointer prime, because the next prime (426442151) can be obtained adding 426442123 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426442123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 426442091 and 426442100.

It is not a weakly prime, because it can be changed into another prime (426442153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213221061 + 213221062.

It is an arithmetic number, because the mean of its divisors is an integer number (213221062).

Almost surely, 2^426442123 is an apocalyptic number.

426442123 is a deficient number, since it is larger than the sum of its proper divisors (1).

426442123 is an equidigital number, since it uses as much as digits as its factorization.

426442123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 28.

The square root of 426442123 is about 20650.4751277059. The cubic root of 426442123 is about 752.6967351304.

Adding to 426442123 its reverse (321244624), we get a palindrome (747686747).

The spelling of 426442123 in words is "four hundred twenty-six million, four hundred forty-two thousand, one hundred twenty-three".