24340421 has 4 divisors (see below), whose sum is σ = 27817632. Its totient is φ = 20863212.

The previous prime is 24340411. The next prime is 24340423. The reversal of 24340421 is 12404342.

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 24340421 - 2¹⁴ = 24324037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24340393 and 24340402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24340423) 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, 1738595 + ... + 1738608.

It is an arithmetic number, because the mean of its divisors is an integer number (6954408).

Almost surely, 2^24340421 is an apocalyptic number.

It is an amenable number.

24340421 is a deficient number, since it is larger than the sum of its proper divisors (3477211).

24340421 is an equidigital number, since it uses as much as digits as its factorization.

24340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477210.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 24340421 is about 4933.6012202042. The cubic root of 24340421 is about 289.8073274292.

Adding to 24340421 its reverse (12404342), we get a palindrome (36744763).

The spelling of 24340421 in words is "twenty-four million, three hundred forty thousand, four hundred twenty-one".