2543545242 has 96 divisors (see below), whose sum is σ = 6532561152. Its totient is φ = 700088832.

The previous prime is 2543545237. The next prime is 2543545259. The reversal of 2543545242 is 2425453452.

2543545242 is a `hidden beast` number, since 254 + 354 + 52 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2543545197 and 2543545206.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 477538 + ... + 482834.

It is an arithmetic number, because the mean of its divisors is an integer number (68047512).

Almost surely, 2^2543545242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2543545242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3266280576).

2543545242 is an abundant number, since it is smaller than the sum of its proper divisors (3989015910).

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

2543545242 is a wasteful number, since it uses less digits than its factorization.

2543545242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5452 (or 5449 counting only the distinct ones).

The product of its digits is 192000, while the sum is 36.

The square root of 2543545242 is about 50433.5725682803. The cubic root of 2543545242 is about 1365.0434925562.

Adding to 2543545242 its reverse (2425453452), we get a palindrome (4968998694).

The spelling of 2543545242 in words is "two billion, five hundred forty-three million, five hundred forty-five thousand, two hundred forty-two".