24139321 has 2 divisors, whose sum is σ = 24139322. Its totient is φ = 24139320.

The previous prime is 24139301. The next prime is 24139331. The reversal of 24139321 is 12393142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19891600 + 4247721 = 4460^2 + 2061^2 .

It is a cyclic number.

It is not a de Polignac number, because 24139321 - 2⁵ = 24139289 is a prime.

It is not a weakly prime, because it can be changed into another prime (24139301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12069660 + 12069661.

It is an arithmetic number, because the mean of its divisors is an integer number (12069661).

Almost surely, 2^24139321 is an apocalyptic number.

It is an amenable number.

24139321 is a deficient number, since it is larger than the sum of its proper divisors (1).

24139321 is an equidigital number, since it uses as much as digits as its factorization.

24139321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

The square root of 24139321 is about 4913.1782992275. The cubic root of 24139321 is about 289.0069920843.

The spelling of 24139321 in words is "twenty-four million, one hundred thirty-nine thousand, three hundred twenty-one".