2540424042 has 48 divisors (see below), whose sum is σ = 6072256008. Its totient is φ = 762600960.

The previous prime is 2540424023. The next prime is 2540424113. The reversal of 2540424042 is 2404240452.

2540424042 is a `hidden beast` number, since 2 + 540 + 42 + 40 + 42 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1611942201 + 928481841 = 40149^2 + 30471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2540423997 and 2540424015.

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 23 ways as a sum of consecutive naturals, for example, 122803 + ... + 141990.

Almost surely, 2^2540424042 is an apocalyptic number.

2540424042 is an abundant number, since it is smaller than the sum of its proper divisors (3531831966).

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

2540424042 is a wasteful number, since it uses less digits than its factorization.

2540424042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264855 (or 264852 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 2540424042 is about 50402.6193962179. The cubic root of 2540424042 is about 1364.4849129284.

Adding to 2540424042 its reverse (2404240452), we get a palindrome (4944664494).

The spelling of 2540424042 in words is "two billion, five hundred forty million, four hundred twenty-four thousand, forty-two".