421141121 has 2 divisors, whose sum is σ = 421141122. Its totient is φ = 421141120.

The previous prime is 421141093. The next prime is 421141129. The reversal of 421141121 is 121141124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406586896 + 14554225 = 20164^2 + 3815^2 .

It is a cyclic number.

It is not a de Polignac number, because 421141121 - 2¹⁸ = 420878977 is a prime.

It is a super-3 number, since 3×421141121³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421141121.

It is not a weakly prime, because it can be changed into another prime (421141129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210570560 + 210570561.

It is an arithmetic number, because the mean of its divisors is an integer number (210570561).

Almost surely, 2^421141121 is an apocalyptic number.

It is an amenable number.

421141121 is a deficient number, since it is larger than the sum of its proper divisors (1).

421141121 is an equidigital number, since it uses as much as digits as its factorization.

421141121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64, while the sum is 17.

The square root of 421141121 is about 20521.7231488976. The cubic root of 421141121 is about 749.5648563229.

Adding to 421141121 its reverse (121141124), we get a palindrome (542282245).

The spelling of 421141121 in words is "four hundred twenty-one million, one hundred forty-one thousand, one hundred twenty-one".