134256789 has 12 divisors (see below), whose sum is σ = 194256972. Its totient is φ = 89352000.

The previous prime is 134256781. The next prime is 134256799. The reversal of 134256789 is 987652431.

134256789 is a `hidden beast` number, since 1 + 3 + 4 + 2 + 567 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 64400625 + 69856164 = 8025^2 + 8358^2 .

It is not a de Polignac number, because 134256789 - 2³ = 134256781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134256781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7002 + ... + 17819.

It is an arithmetic number, because the mean of its divisors is an integer number (16188081).

Almost surely, 2^134256789 is an apocalyptic number.

It is an amenable number.

134256789 is a deficient number, since it is larger than the sum of its proper divisors (60000183).

134256789 is a wasteful number, since it uses less digits than its factorization.

134256789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25428 (or 25425 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 134256789 is about 11586.9231895271. The cubic root of 134256789 is about 512.0496638124.

The spelling of 134256789 in words is "one hundred thirty-four million, two hundred fifty-six thousand, seven hundred eighty-nine".