426828125123 has 2 divisors, whose sum is σ = 426828125124. Its totient is φ = 426828125122.

The previous prime is 426828125111. The next prime is 426828125147. The reversal of 426828125123 is 321521828624.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426828125123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (426828125023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213414062561 + 213414062562.

It is an arithmetic number, because the mean of its divisors is an integer number (213414062562).

Almost surely, 2^426828125123 is an apocalyptic number.

426828125123 is a deficient number, since it is larger than the sum of its proper divisors (1).

426828125123 is an equidigital number, since it uses as much as digits as its factorization.

426828125123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 368640, while the sum is 44.

The spelling of 426828125123 in words is "four hundred twenty-six billion, eight hundred twenty-eight million, one hundred twenty-five thousand, one hundred twenty-three".