134287257 has 24 divisors (see below), whose sum is σ = 199299072. Its totient is φ = 79950240.

The previous prime is 134287253. The next prime is 134287273. The reversal of 134287257 is 752782431.

It is not a de Polignac number, because 134287257 - 2² = 134287253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (134287253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35688 + ... + 39270.

It is an arithmetic number, because the mean of its divisors is an integer number (8304128).

Almost surely, 2^134287257 is an apocalyptic number.

It is an amenable number.

134287257 is a deficient number, since it is larger than the sum of its proper divisors (65011815).

134287257 is a wasteful number, since it uses less digits than its factorization.

134287257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661 (or 3630 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 134287257 is about 11588.2378729469. The cubic root of 134287257 is about 512.0883954333.

The spelling of 134287257 in words is "one hundred thirty-four million, two hundred eighty-seven thousand, two hundred fifty-seven".