260406121 has 2 divisors, whose sum is σ = 260406122. Its totient is φ = 260406120.

The previous prime is 260406101. The next prime is 260406131. The reversal of 260406121 is 121604062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222755625 + 37650496 = 14925^2 + 6136^2 .

It is a cyclic number.

It is not a de Polignac number, because 260406121 - 2⁵ = 260406089 is a prime.

It is a super-2 number, since 2×260406121² = 135622695708533282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 260406092 and 260406101.

It is not a weakly prime, because it can be changed into another prime (260406101) 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 as a sum of consecutive naturals, namely, 130203060 + 130203061.

It is an arithmetic number, because the mean of its divisors is an integer number (130203061).

Almost surely, 2^260406121 is an apocalyptic number.

It is an amenable number.

260406121 is a deficient number, since it is larger than the sum of its proper divisors (1).

260406121 is an equidigital number, since it uses as much as digits as its factorization.

260406121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 260406121 is about 16137.1038603586. The cubic root of 260406121 is about 638.5825735515.

The spelling of 260406121 in words is "two hundred sixty million, four hundred six thousand, one hundred twenty-one".