2520120242 has 8 divisors (see below), whose sum is σ = 3910531500. Its totient is φ = 1216609744.

The previous prime is 2520120223. The next prime is 2520120247. The reversal of 2520120242 is 2420210252.

It can be written as a sum of positive squares in 2 ways, for example, as 2289718201 + 230402041 = 47851^2 + 15179^2 .

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

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21725117 + ... + 21725232.

Almost surely, 2^2520120242 is an apocalyptic number.

2520120242 is a deficient number, since it is larger than the sum of its proper divisors (1390411258).

2520120242 is a wasteful number, since it uses less digits than its factorization.

2520120242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43450380.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2520120242 is about 50200.7992167455. The cubic root of 2520120242 is about 1360.8400666995.

Adding to 2520120242 its reverse (2420210252), we get a palindrome (4940330494).

The spelling of 2520120242 in words is "two billion, five hundred twenty million, one hundred twenty thousand, two hundred forty-two".