426307243 has 2 divisors, whose sum is σ = 426307244. Its totient is φ = 426307242.

The previous prime is 426307213. The next prime is 426307253. The reversal of 426307243 is 342703624.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426307243 is a prime.

It is a super-2 number, since 2×426307243² = 363475730868522098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (426307213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213153621 + 213153622.

It is an arithmetic number, because the mean of its divisors is an integer number (213153622).

Almost surely, 2^426307243 is an apocalyptic number.

426307243 is a deficient number, since it is larger than the sum of its proper divisors (1).

426307243 is an equidigital number, since it uses as much as digits as its factorization.

426307243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 426307243 is about 20647.2090850071. The cubic root of 426307243 is about 752.6173695801.

The spelling of 426307243 in words is "four hundred twenty-six million, three hundred seven thousand, two hundred forty-three".