424112521 has 4 divisors (see below), whose sum is σ = 484700032. Its totient is φ = 363525012.

The previous prime is 424112497. The next prime is 424112539. The reversal of 424112521 is 125211424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 424112521 - 2¹⁷ = 423981449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424112492 and 424112501.

It is not an unprimeable number, because it can be changed into a prime (424112921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30293745 + ... + 30293758.

It is an arithmetic number, because the mean of its divisors is an integer number (121175008).

Almost surely, 2^424112521 is an apocalyptic number.

It is an amenable number.

424112521 is a deficient number, since it is larger than the sum of its proper divisors (60587511).

424112521 is an equidigital number, since it uses as much as digits as its factorization.

424112521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60587510.

The product of its digits is 640, while the sum is 22.

The square root of 424112521 is about 20593.9923521400. The cubic root of 424112521 is about 751.3236011031.

Adding to 424112521 its reverse (125211424), we get a palindrome (549323945).

The spelling of 424112521 in words is "four hundred twenty-four million, one hundred twelve thousand, five hundred twenty-one".