2417140721 has 2 divisors, whose sum is σ = 2417140722. Its totient is φ = 2417140720.

The previous prime is 2417140703. The next prime is 2417140723. The reversal of 2417140721 is 1270417142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1956823696 + 460317025 = 44236^2 + 21455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2417140721 is a prime.

Together with 2417140723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2417140723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1208570360 + 1208570361.

It is an arithmetic number, because the mean of its divisors is an integer number (1208570361).

Almost surely, 2^2417140721 is an apocalyptic number.

It is an amenable number.

2417140721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2417140721 is an equidigital number, since it uses as much as digits as its factorization.

2417140721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 2417140721 is about 49164.4253602135. The cubic root of 2417140721 is about 1342.0457208073.

Adding to 2417140721 its reverse (1270417142), we get a palindrome (3687557863).

The spelling of 2417140721 in words is "two billion, four hundred seventeen million, one hundred forty thousand, seven hundred twenty-one".