424780121 has 2 divisors, whose sum is σ = 424780122. Its totient is φ = 424780120.

The previous prime is 424780099. The next prime is 424780127. The reversal of 424780121 is 121087424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407232400 + 17547721 = 20180^2 + 4189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424780121 is a prime.

It is not a weakly prime, because it can be changed into another prime (424780127) 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, 212390060 + 212390061.

It is an arithmetic number, because the mean of its divisors is an integer number (212390061).

Almost surely, 2^424780121 is an apocalyptic number.

It is an amenable number.

424780121 is a deficient number, since it is larger than the sum of its proper divisors (1).

424780121 is an equidigital number, since it uses as much as digits as its factorization.

424780121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 424780121 is about 20610.1945890862. The cubic root of 424780121 is about 751.7176165734.

The spelling of 424780121 in words is "four hundred twenty-four million, seven hundred eighty thousand, one hundred twenty-one".