260385121 has 4 divisors (see below), whose sum is σ = 260593200. Its totient is φ = 260177044.

The previous prime is 260385119. The next prime is 260385127. The reversal of 260385121 is 121583062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 260385121 - 2¹ = 260385119 is a prime.

It is a super-2 number, since 2×260385121² = 135600822476369282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 260385121.

It is not an unprimeable number, because it can be changed into a prime (260385127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102151 + ... + 104668.

It is an arithmetic number, because the mean of its divisors is an integer number (65148300).

Almost surely, 2^260385121 is an apocalyptic number.

It is an amenable number.

260385121 is a deficient number, since it is larger than the sum of its proper divisors (208079).

260385121 is a wasteful number, since it uses less digits than its factorization.

260385121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208078.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 260385121 is about 16136.4531728630. The cubic root of 260385121 is about 638.5654072953.

The spelling of 260385121 in words is "two hundred sixty million, three hundred eighty-five thousand, one hundred twenty-one".