260420431 has 4 divisors (see below), whose sum is σ = 261381664. Its totient is φ = 259459200.

The previous prime is 260420401. The next prime is 260420443. The reversal of 260420431 is 134024062.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 260420431 - 2²⁵ = 226865999 is a prime.

It is a super-2 number, since 2×260420431² = 135637601764451522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260420401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480210 + ... + 480751.

It is an arithmetic number, because the mean of its divisors is an integer number (65345416).

Almost surely, 2^260420431 is an apocalyptic number.

260420431 is a deficient number, since it is larger than the sum of its proper divisors (961233).

260420431 is an equidigital number, since it uses as much as digits as its factorization.

260420431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961232.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 260420431 is about 16137.5472423786. The cubic root of 260420431 is about 638.5942706002.

Adding to 260420431 its reverse (134024062), we get a palindrome (394444493).

The spelling of 260420431 in words is "two hundred sixty million, four hundred twenty thousand, four hundred thirty-one".