24012421 has 4 divisors (see below), whose sum is σ = 24089452. Its totient is φ = 23935392.

The previous prime is 24012419. The next prime is 24012427. The reversal of 24012421 is 12421042.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7317025 + 16695396 = 2705^2 + 4086^2 .

It is a cyclic number.

It is not a de Polignac number, because 24012421 - 2¹ = 24012419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24012395 and 24012404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24012427) 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 in 3 ways as a sum of consecutive naturals, for example, 38046 + ... + 38671.

It is an arithmetic number, because the mean of its divisors is an integer number (6022363).

Almost surely, 2^24012421 is an apocalyptic number.

It is an amenable number.

24012421 is a deficient number, since it is larger than the sum of its proper divisors (77031).

24012421 is an equidigital number, since it uses as much as digits as its factorization.

24012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77030.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 24012421 is about 4900.2470345892. The cubic root of 24012421 is about 288.4996670958.

Adding to 24012421 its reverse (12421042), we get a palindrome (36433463).

The spelling of 24012421 in words is "twenty-four million, twelve thousand, four hundred twenty-one".