255140120 has 16 divisors (see below), whose sum is σ = 574065360. Its totient is φ = 102056032.

The previous prime is 255140107. The next prime is 255140129. The reversal of 255140120 is 21041552.

It is a super-2 number, since 2×255140120² = 130192961667228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 255140092 and 255140101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255140129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3189212 + ... + 3189291.

It is an arithmetic number, because the mean of its divisors is an integer number (35879085).

Almost surely, 2^255140120 is an apocalyptic number.

255140120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255140120 is an abundant number, since it is smaller than the sum of its proper divisors (318925240).

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

255140120 is a wasteful number, since it uses less digits than its factorization.

255140120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6378514 (or 6378510 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 255140120 is about 15973.1061475218. The cubic root of 255140120 is about 634.2486991474.

Adding to 255140120 its reverse (21041552), we get a palindrome (276181672).

The spelling of 255140120 in words is "two hundred fifty-five million, one hundred forty thousand, one hundred twenty".