2520120247 has 2 divisors, whose sum is σ = 2520120248. Its totient is φ = 2520120246.

The previous prime is 2520120223. The next prime is 2520120257. The reversal of 2520120247 is 7420210252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2520120247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2520120217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260060123 + 1260060124.

It is an arithmetic number, because the mean of its divisors is an integer number (1260060124).

Almost surely, 2^2520120247 is an apocalyptic number.

2520120247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520120247 is an equidigital number, since it uses as much as digits as its factorization.

2520120247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 2520120247 is about 50200.7992665455. The cubic root of 2520120247 is about 1360.8400675994.

Adding to 2520120247 its reverse (7420210252), we get a palindrome (9940330499).

The spelling of 2520120247 in words is "two billion, five hundred twenty million, one hundred twenty thousand, two hundred forty-seven".