426145823 has 2 divisors, whose sum is σ = 426145824. Its totient is φ = 426145822.

The previous prime is 426145739. The next prime is 426145831. The reversal of 426145823 is 328541624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426145823 - 2⁸ = 426145567 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426145123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213072911 + 213072912.

It is an arithmetic number, because the mean of its divisors is an integer number (213072912).

Almost surely, 2^426145823 is an apocalyptic number.

426145823 is a deficient number, since it is larger than the sum of its proper divisors (1).

426145823 is an equidigital number, since it uses as much as digits as its factorization.

426145823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 35.

The square root of 426145823 is about 20643.2997120131. The cubic root of 426145823 is about 752.5223654607.

The spelling of 426145823 in words is "four hundred twenty-six million, one hundred forty-five thousand, eight hundred twenty-three".