24240042209 has 2 divisors, whose sum is σ = 24240042210. Its totient is φ = 24240042208.

The previous prime is 24240042191. The next prime is 24240042221. The reversal of 24240042209 is 90224004242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23578523809 + 661518400 = 153553^2 + 25720^2 .

It is a cyclic number.

It is not a de Polignac number, because 24240042209 - 2¹² = 24240038113 is a prime.

It is not a weakly prime, because it can be changed into another prime (24240342209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12120021104 + 12120021105.

It is an arithmetic number, because the mean of its divisors is an integer number (12120021105).

Almost surely, 2^24240042209 is an apocalyptic number.

It is an amenable number.

24240042209 is a deficient number, since it is larger than the sum of its proper divisors (1).

24240042209 is an equidigital number, since it uses as much as digits as its factorization.

24240042209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 24240042209 in words is "twenty-four billion, two hundred forty million, forty-two thousand, two hundred nine".