2556180042 has 32 divisors (see below), whose sum is σ = 5513864832. Its totient is φ = 785338944.

The previous prime is 2556180041. The next prime is 2556180059. The reversal of 2556180042 is 2400816552.

It is a junction number, because it is equal to n+sod(n) for n = 2556179985 and 2556180012.

It is not an unprimeable number, because it can be changed into a prime (2556180041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28603 + ... + 77009.

It is an arithmetic number, because the mean of its divisors is an integer number (172308276).

Almost surely, 2^2556180042 is an apocalyptic number.

2556180042 is an abundant number, since it is smaller than the sum of its proper divisors (2957684790).

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

2556180042 is a wasteful number, since it uses less digits than its factorization.

2556180042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49102.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 2556180042 is about 50558.6791955644. The cubic root of 2556180042 is about 1367.2999981783.

Adding to 2556180042 its reverse (2400816552), we get a palindrome (4956996594).

The spelling of 2556180042 in words is "two billion, five hundred fifty-six million, one hundred eighty thousand, forty-two".