2520120243 has 8 divisors (see below), whose sum is σ = 3366611856. Its totient is φ = 1676854400.

The previous prime is 2520120223. The next prime is 2520120247. The reversal of 2520120243 is 3420210252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2520120243 - 2⁹ = 2520119731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2520120247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804618 + ... + 807743.

It is an arithmetic number, because the mean of its divisors is an integer number (420826482).

Almost surely, 2^2520120243 is an apocalyptic number.

2520120243 is a deficient number, since it is larger than the sum of its proper divisors (846491613).

2520120243 is a wasteful number, since it uses less digits than its factorization.

2520120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612885.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2520120243 is about 50200.7992267055. The cubic root of 2520120243 is about 1360.8400668795.

Adding to 2520120243 its reverse (3420210252), we get a palindrome (5940330495).

Subtracting 2520120243 from its reverse (3420210252), we obtain a palindrome (900090009).

The spelling of 2520120243 in words is "two billion, five hundred twenty million, one hundred twenty thousand, two hundred forty-three".