24430142021 has 4 divisors (see below), whose sum is σ = 24622505472. Its totient is φ = 24237778572.

The previous prime is 24430141999. The next prime is 24430142053. The reversal of 24430142021 is 12024103442.

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 a de Polignac number, because none of the positive numbers 2^k-24430142021 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 (24430162021) 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, 96181535 + ... + 96181788.

It is an arithmetic number, because the mean of its divisors is an integer number (6155626368).

Almost surely, 2^24430142021 is an apocalyptic number.

It is an amenable number.

24430142021 is a deficient number, since it is larger than the sum of its proper divisors (192363451).

24430142021 is a wasteful number, since it uses less digits than its factorization.

24430142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192363450.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 24430142021 its reverse (12024103442), we get a palindrome (36454245463).

The spelling of 24430142021 in words is "twenty-four billion, four hundred thirty million, one hundred forty-two thousand, twenty-one".