24420139 has 2 divisors, whose sum is σ = 24420140. Its totient is φ = 24420138.

The previous prime is 24420127. The next prime is 24420203. The reversal of 24420139 is 93102442.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 24420139 - 2⁹ = 24419627 is a prime.

It is not a weakly prime, because it can be changed into another prime (24420239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12210069 + 12210070.

It is an arithmetic number, because the mean of its divisors is an integer number (12210070).

Almost surely, 2^24420139 is an apocalyptic number.

24420139 is a deficient number, since it is larger than the sum of its proper divisors (1).

24420139 is an equidigital number, since it uses as much as digits as its factorization.

24420139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 24420139 is about 4941.6737043233. The cubic root of 24420139 is about 290.1233680420.

The spelling of 24420139 in words is "twenty-four million, four hundred twenty thousand, one hundred thirty-nine".