260441021 has 2 divisors, whose sum is σ = 260441022. Its totient is φ = 260441020.

The previous prime is 260441017. The next prime is 260441047. The reversal of 260441021 is 120144062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243516025 + 16924996 = 15605^2 + 4114^2 .

It is a cyclic number.

It is not a de Polignac number, because 260441021 - 2² = 260441017 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 260440984 and 260441002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260441011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130220510 + 130220511.

It is an arithmetic number, because the mean of its divisors is an integer number (130220511).

Almost surely, 2^260441021 is an apocalyptic number.

It is an amenable number.

260441021 is a deficient number, since it is larger than the sum of its proper divisors (1).

260441021 is an equidigital number, since it uses as much as digits as its factorization.

260441021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 260441021 is about 16138.1851829752. The cubic root of 260441021 is about 638.6111001931.

Adding to 260441021 its reverse (120144062), we get a palindrome (380585083).

The spelling of 260441021 in words is "two hundred sixty million, four hundred forty-one thousand, twenty-one".