24002139 has 8 divisors (see below), whose sum is σ = 36574720. Its totient is φ = 13715496.

The previous prime is 24002129. The next prime is 24002141. The reversal of 24002139 is 93120042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 24002139 - 2⁴ = 24002123 is a prime.

It is a super-2 number, since 2×24002139² = 1152205353150642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1142959 = 24002139 / (2 + 4 + 0 + 0 + 2 + 1 + 3 + 9).

It is not an unprimeable number, because it can be changed into a prime (24002119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571459 + ... + 571500.

It is an arithmetic number, because the mean of its divisors is an integer number (4571840).

Almost surely, 2^24002139 is an apocalyptic number.

24002139 is a deficient number, since it is larger than the sum of its proper divisors (12572581).

24002139 is a wasteful number, since it uses less digits than its factorization.

24002139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142969.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 24002139 is about 4899.1977914757. The cubic root of 24002139 is about 288.4584831731.

The spelling of 24002139 in words is "twenty-four million, two thousand, one hundred thirty-nine".