256134120 has 128 divisors (see below), whose sum is σ = 852266880. Its totient is φ = 61056000.

The previous prime is 256134103. The next prime is 256134127. The reversal of 256134120 is 21431652.

256134120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (256134127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78930 + ... + 82110.

It is an arithmetic number, because the mean of its divisors is an integer number (6658335).

Almost surely, 2^256134120 is an apocalyptic number.

256134120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256134120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426133440).

256134120 is an abundant number, since it is smaller than the sum of its proper divisors (596132760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256134120 is a wasteful number, since it uses less digits than its factorization.

256134120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267 (or 3263 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 256134120 is about 16004.1907011882. The cubic root of 256134120 is about 635.0712880058.

Adding to 256134120 its reverse (21431652), we get a palindrome (277565772).

The spelling of 256134120 in words is "two hundred fifty-six million, one hundred thirty-four thousand, one hundred twenty".