812458043 has 2 divisors, whose sum is σ = 812458044. Its totient is φ = 812458042.

The previous prime is 812458021. The next prime is 812458061. The reversal of 812458043 is 340854218.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 812458043 - 2⁸ = 812457787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 812457994 and 812458012.

It is not a weakly prime, because it can be changed into another prime (812458063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406229021 + 406229022.

It is an arithmetic number, because the mean of its divisors is an integer number (406229022).

Almost surely, 2^812458043 is an apocalyptic number.

812458043 is a deficient number, since it is larger than the sum of its proper divisors (1).

812458043 is an equidigital number, since it uses as much as digits as its factorization.

812458043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 812458043 is about 28503.6496435106. The cubic root of 812458043 is about 933.1117268796. Note that the first 3 decimals are identical.

The spelling of 812458043 in words is "eight hundred twelve million, four hundred fifty-eight thousand, forty-three".