270121 has 2 divisors, whose sum is σ = 270122. Its totient is φ = 270120.

The previous prime is 270097. The next prime is 270131. The reversal of 270121 is 121072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212521 + 57600 = 461^2 + 240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-270121 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (270131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135060 + 135061.

It is an arithmetic number, because the mean of its divisors is an integer number (135061).

2²⁷⁰¹²¹ is an apocalyptic number.

It is an amenable number.

270121 is a deficient number, since it is larger than the sum of its proper divisors (1).

270121 is an equidigital number, since it uses as much as digits as its factorization.

270121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 270121 is about 519.7316615331. The cubic root of 270121 is about 64.6426943182.

Adding to 270121 its reverse (121072), we get a palindrome (391193).

The spelling of 270121 in words is "two hundred seventy thousand, one hundred twenty-one", and thus it is an iban number.