24142439 has 4 divisors (see below), whose sum is σ = 24153360. Its totient is φ = 24131520.

The previous prime is 24142429. The next prime is 24142453. The reversal of 24142439 is 93424142.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24142439 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 (24142429) 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, 842 + ... + 6999.

It is an arithmetic number, because the mean of its divisors is an integer number (6038340).

Almost surely, 2^24142439 is an apocalyptic number.

24142439 is a deficient number, since it is larger than the sum of its proper divisors (10921).

24142439 is an equidigital number, since it uses as much as digits as its factorization.

24142439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920.

The product of its digits is 6912, while the sum is 29.

The square root of 24142439 is about 4913.4955988583. The cubic root of 24142439 is about 289.0194349226.

The spelling of 24142439 in words is "twenty-four million, one hundred forty-two thousand, four hundred thirty-nine".