424121407 has 2 divisors, whose sum is σ = 424121408. Its totient is φ = 424121406.

The previous prime is 424121377. The next prime is 424121413. The reversal of 424121407 is 704121424.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424121407 is a prime.

It is equal to p_22552081 and since 424121407 and 22552081 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424121107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212060703 + 212060704.

It is an arithmetic number, because the mean of its divisors is an integer number (212060704).

Almost surely, 2^424121407 is an apocalyptic number.

424121407 is a deficient number, since it is larger than the sum of its proper divisors (1).

424121407 is an equidigital number, since it uses as much as digits as its factorization.

424121407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 424121407 is about 20594.2080935393. The cubic root of 424121407 is about 751.3288483072.

The spelling of 424121407 in words is "four hundred twenty-four million, one hundred twenty-one thousand, four hundred seven".