2540112021 has 16 divisors (see below), whose sum is σ = 3767574720. Its totient is φ = 1691407440.

The previous prime is 2540112013. The next prime is 2540112023. The reversal of 2540112021 is 1202110452.

2540112021 is a `hidden beast` number, since 2 + 540 + 1 + 120 + 2 + 1 = 666.

It is not a de Polignac number, because 2540112021 - 2³ = 2540112013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2540111985 and 2540112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540112023) 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, 32115 + ... + 78176.

It is an arithmetic number, because the mean of its divisors is an integer number (235473420).

Almost surely, 2^2540112021 is an apocalyptic number.

It is an amenable number.

2540112021 is a deficient number, since it is larger than the sum of its proper divisors (1227462699).

2540112021 is a wasteful number, since it uses less digits than its factorization.

2540112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111153 (or 111147 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2540112021 is about 50399.5240156095. The cubic root of 2540112021 is about 1364.4290475333.

Adding to 2540112021 its reverse (1202110452), we get a palindrome (3742222473).

The spelling of 2540112021 in words is "two billion, five hundred forty million, one hundred twelve thousand, twenty-one".