134257469 has 2 divisors, whose sum is σ = 134257470. Its totient is φ = 134257468.

The previous prime is 134257457. The next prime is 134257471. The reversal of 134257469 is 964752431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97812100 + 36445369 = 9890^2 + 6037^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134257469 is a prime.

It is a super-2 number, since 2×134257469² = 36050135964571922, which contains 22 as substring.

Together with 134257471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134259469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67128734 + 67128735.

It is an arithmetic number, because the mean of its divisors is an integer number (67128735).

Almost surely, 2^134257469 is an apocalyptic number.

It is an amenable number.

134257469 is a deficient number, since it is larger than the sum of its proper divisors (1).

134257469 is an equidigital number, since it uses as much as digits as its factorization.

134257469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 134257469 is about 11586.9525329139. The cubic root of 134257469 is about 512.0505283080.

The spelling of 134257469 in words is "one hundred thirty-four million, two hundred fifty-seven thousand, four hundred sixty-nine".