134123257 has 2 divisors, whose sum is σ = 134123258. Its totient is φ = 134123256.

The previous prime is 134123243. The next prime is 134123273. The reversal of 134123257 is 752321431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118788201 + 15335056 = 10899^2 + 3916^2 .

It is a cyclic number.

It is not a de Polignac number, because 134123257 - 2²³ = 125734649 is a prime.

It is not a weakly prime, because it can be changed into another prime (134123207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67061628 + 67061629.

It is an arithmetic number, because the mean of its divisors is an integer number (67061629).

Almost surely, 2^134123257 is an apocalyptic number.

It is an amenable number.

134123257 is a deficient number, since it is larger than the sum of its proper divisors (1).

134123257 is an equidigital number, since it uses as much as digits as its factorization.

134123257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 134123257 is about 11581.1595706130. The cubic root of 134123257 is about 511.8798457164.

Adding to 134123257 its reverse (752321431), we get a palindrome (886444688).

The spelling of 134123257 in words is "one hundred thirty-four million, one hundred twenty-three thousand, two hundred fifty-seven".