260323421 has 2 divisors, whose sum is σ = 260323422. Its totient is φ = 260323420.

The previous prime is 260323387. The next prime is 260323423. The reversal of 260323421 is 124323062.

260323421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198528100 + 61795321 = 14090^2 + 7861^2 .

It is a cyclic number.

It is not a de Polignac number, because 260323421 - 2²² = 256129117 is a prime.

It is a super-2 number, since 2×260323421² = 135536567042286482, which contains 22 as substring.

Together with 260323423, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_14212535 and since 260323421 and 14212535 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260323423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130161710 + 130161711.

It is an arithmetic number, because the mean of its divisors is an integer number (130161711).

Almost surely, 2^260323421 is an apocalyptic number.

It is an amenable number.

260323421 is a deficient number, since it is larger than the sum of its proper divisors (1).

260323421 is an equidigital number, since it uses as much as digits as its factorization.

260323421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 260323421 is about 16134.5412392172. The cubic root of 260323421 is about 638.5149658596.

Adding to 260323421 its reverse (124323062), we get a palindrome (384646483).

The spelling of 260323421 in words is "two hundred sixty million, three hundred twenty-three thousand, four hundred twenty-one".