256060121 has 2 divisors, whose sum is σ = 256060122. Its totient is φ = 256060120.

The previous prime is 256060109. The next prime is 256060153. The reversal of 256060121 is 121060652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209670400 + 46389721 = 14480^2 + 6811^2 .

It is a cyclic number.

It is not a de Polignac number, because 256060121 - 2¹⁸ = 255797977 is a prime.

It is not a weakly prime, because it can be changed into another prime (256360121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128030060 + 128030061.

It is an arithmetic number, because the mean of its divisors is an integer number (128030061).

Almost surely, 2^256060121 is an apocalyptic number.

It is an amenable number.

256060121 is a deficient number, since it is larger than the sum of its proper divisors (1).

256060121 is an equidigital number, since it uses as much as digits as its factorization.

256060121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 256060121 is about 16001.8786709561. The cubic root of 256060121 is about 635.0101232189.

The spelling of 256060121 in words is "two hundred fifty-six million, sixty thousand, one hundred twenty-one".