260142565 has 4 divisors (see below), whose sum is σ = 312171084. Its totient is φ = 208114048.

The previous prime is 260142541. The next prime is 260142593. The reversal of 260142565 is 565241062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145588356 + 114554209 = 12066^2 + 10703^2 .

It is a cyclic number.

It is not a de Polignac number, because 260142565 - 2⁷ = 260142437 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26014252 + ... + 26014261.

It is an arithmetic number, because the mean of its divisors is an integer number (78042771).

Almost surely, 2^260142565 is an apocalyptic number.

It is an amenable number.

260142565 is a deficient number, since it is larger than the sum of its proper divisors (52028519).

260142565 is an equidigital number, since it uses as much as digits as its factorization.

260142565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52028518.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 260142565 is about 16128.9356437429. The cubic root of 260142565 is about 638.3670652020.

The spelling of 260142565 in words is "two hundred sixty million, one hundred forty-two thousand, five hundred sixty-five".