812426429 has 2 divisors, whose sum is σ = 812426430. Its totient is φ = 812426428.

The previous prime is 812426411. The next prime is 812426431. The reversal of 812426429 is 924624218.

It is a happy number.

812426429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767844100 + 44582329 = 27710^2 + 6677^2 .

It is a cyclic number.

It is not a de Polignac number, because 812426429 - 2²⁴ = 795649213 is a prime.

Together with 812426431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 812426392 and 812426401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812426479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406213214 + 406213215.

It is an arithmetic number, because the mean of its divisors is an integer number (406213215).

Almost surely, 2^812426429 is an apocalyptic number.

It is an amenable number.

812426429 is a deficient number, since it is larger than the sum of its proper divisors (1).

812426429 is an equidigital number, since it uses as much as digits as its factorization.

812426429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 38.

The square root of 812426429 is about 28503.0950775525. The cubic root of 812426429 is about 933.0996237820.

The spelling of 812426429 in words is "eight hundred twelve million, four hundred twenty-six thousand, four hundred twenty-nine".