2520228757842 has 20 divisors (see below), whose sum is σ = 5647179254046. Its totient is φ = 840076252560.

The previous prime is 2520228757759. The next prime is 2520228757843. The reversal of 2520228757842 is 2487578220252.

2520228757842 is a `hidden beast` number, since 2 + 5 + 2 + 0 + 2 + 28 + 7 + 578 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1908815796801 + 611412961041 = 1381599^2 + 781929^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2520228757843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7778483659 + ... + 7778483982.

Almost surely, 2^{2520228757842} is an apocalyptic number.

2520228757842 is an abundant number, since it is smaller than the sum of its proper divisors (3126950496204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2520228757842 is a wasteful number, since it uses less digits than its factorization.

2520228757842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15556967655 (or 15556967646 counting only the distinct ones).

The product of its (nonzero) digits is 10035200, while the sum is 54.

The spelling of 2520228757842 in words is "two trillion, five hundred twenty billion, two hundred twenty-eight million, seven hundred fifty-seven thousand, eight hundred forty-two".