24340442421 has 4 divisors (see below), whose sum is σ = 32453923232. Its totient is φ = 16226961612.

The previous prime is 24340442377. The next prime is 24340442437. The reversal of 24340442421 is 12424404342.

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 not a de Polignac number, because 24340442421 - 2¹¹ = 24340440373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24340442471) 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, 4056740401 + ... + 4056740406.

It is an arithmetic number, because the mean of its divisors is an integer number (8113480808).

Almost surely, 2^24340442421 is an apocalyptic number.

It is an amenable number.

24340442421 is a deficient number, since it is larger than the sum of its proper divisors (8113480811).

24340442421 is an equidigital number, since it uses as much as digits as its factorization.

24340442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8113480810.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 24340442421 its reverse (12424404342), we get a palindrome (36764846763).

The spelling of 24340442421 in words is "twenty-four billion, three hundred forty million, four hundred forty-two thousand, four hundred twenty-one".