424120231 has 2 divisors, whose sum is σ = 424120232. Its totient is φ = 424120230.

The previous prime is 424120211. The next prime is 424120259. The reversal of 424120231 is 132021424.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424120231 is a prime.

It is a super-2 number, since 2×424120231² = 359755940686986722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 424120199 and 424120208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424120211) 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, 212060115 + 212060116.

It is an arithmetic number, because the mean of its divisors is an integer number (212060116).

Almost surely, 2^424120231 is an apocalyptic number.

424120231 is a deficient number, since it is larger than the sum of its proper divisors (1).

424120231 is an equidigital number, since it uses as much as digits as its factorization.

424120231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 424120231 is about 20594.1795418026. The cubic root of 424120231 is about 751.3281538806.

Adding to 424120231 its reverse (132021424), we get a palindrome (556141655).

The spelling of 424120231 in words is "four hundred twenty-four million, one hundred twenty thousand, two hundred thirty-one".