234555121 has 2 divisors, whose sum is σ = 234555122. Its totient is φ = 234555120.

The previous prime is 234555109. The next prime is 234555151. The reversal of 234555121 is 121555432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152399025 + 82156096 = 12345^2 + 9064^2 .

It is a cyclic number.

It is not a de Polignac number, because 234555121 - 2⁷ = 234554993 is a prime.

It is a super-2 number, since 2×234555121² = 110032209574649282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 234555121.

It is not a weakly prime, because it can be changed into another prime (234555151) 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, 117277560 + 117277561.

It is an arithmetic number, because the mean of its divisors is an integer number (117277561).

Almost surely, 2^234555121 is an apocalyptic number.

It is an amenable number.

234555121 is a deficient number, since it is larger than the sum of its proper divisors (1).

234555121 is an equidigital number, since it uses as much as digits as its factorization.

234555121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 28.

The square root of 234555121 is about 15315.1924898122. The cubic root of 234555121 is about 616.7109218138.

The spelling of 234555121 in words is "two hundred thirty-four million, five hundred fifty-five thousand, one hundred twenty-one".