255140029 has 8 divisors (see below), whose sum is σ = 270614520. Its totient is φ = 239717376.

The previous prime is 255140021. The next prime is 255140033. The reversal of 255140029 is 920041552.

It can be written as a sum of positive squares in 4 ways, for example, as 93799225 + 161340804 = 9685^2 + 12702^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255140029 - 2³ = 255140021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255139979 and 255140006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255140021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2574 + ... + 22735.

It is an arithmetic number, because the mean of its divisors is an integer number (33826815).

Almost surely, 2^255140029 is an apocalyptic number.

It is an amenable number.

255140029 is a deficient number, since it is larger than the sum of its proper divisors (15474491).

255140029 is a wasteful number, since it uses less digits than its factorization.

255140029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25919.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 255140029 is about 15973.1032989836. The cubic root of 255140029 is about 634.2486237423.

The spelling of 255140029 in words is "two hundred fifty-five million, one hundred forty thousand, twenty-nine".