424551121 has 2 divisors, whose sum is σ = 424551122. Its totient is φ = 424551120.

The previous prime is 424551119. The next prime is 424551139. The reversal of 424551121 is 121155424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274366096 + 150185025 = 16564^2 + 12255^2 .

It is a cyclic number.

It is not a de Polignac number, because 424551121 - 2¹ = 424551119 is a prime.

Together with 424551119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (424554121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212275560 + 212275561.

It is an arithmetic number, because the mean of its divisors is an integer number (212275561).

Almost surely, 2^424551121 is an apocalyptic number.

It is an amenable number.

424551121 is a deficient number, since it is larger than the sum of its proper divisors (1).

424551121 is an equidigital number, since it uses as much as digits as its factorization.

424551121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 25.

The square root of 424551121 is about 20604.6383370347. The cubic root of 424551121 is about 751.5825080241.

The spelling of 424551121 in words is "four hundred twenty-four million, five hundred fifty-one thousand, one hundred twenty-one".