813142417 has 2 divisors, whose sum is σ = 813142418. Its totient is φ = 813142416.

The previous prime is 813142403. The next prime is 813142433. The reversal of 813142417 is 714241318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722588161 + 90554256 = 26881^2 + 9516^2 .

It is a cyclic number.

It is not a de Polignac number, because 813142417 - 2²³ = 804753809 is a prime.

It is a super-2 number, since 2×813142417² = 1322401180649203778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (813142117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406571208 + 406571209.

It is an arithmetic number, because the mean of its divisors is an integer number (406571209).

Almost surely, 2^813142417 is an apocalyptic number.

It is an amenable number.

813142417 is a deficient number, since it is larger than the sum of its proper divisors (1).

813142417 is an equidigital number, since it uses as much as digits as its factorization.

813142417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 31.

The square root of 813142417 is about 28515.6521405350. The cubic root of 813142417 is about 933.3736555567.

The spelling of 813142417 in words is "eight hundred thirteen million, one hundred forty-two thousand, four hundred seventeen".