424129397 has 2 divisors, whose sum is σ = 424129398. Its totient is φ = 424129396.

The previous prime is 424129369. The next prime is 424129427. The reversal of 424129397 is 793921424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233661796 + 190467601 = 15286^2 + 13801^2 .

It is a cyclic number.

It is not a de Polignac number, because 424129397 - 2⁶ = 424129333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424129367) 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, 212064698 + 212064699.

It is an arithmetic number, because the mean of its divisors is an integer number (212064699).

Almost surely, 2^424129397 is an apocalyptic number.

It is an amenable number.

424129397 is a deficient number, since it is larger than the sum of its proper divisors (1).

424129397 is an equidigital number, since it uses as much as digits as its factorization.

424129397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 424129397 is about 20594.4020792059. The cubic root of 424129397 is about 751.3335663586. Note that the first 3 decimals are identical.

The spelling of 424129397 in words is "four hundred twenty-four million, one hundred twenty-nine thousand, three hundred ninety-seven".