540042181 has 8 divisors (see below), whose sum is σ = 629787200. Its totient is φ = 462893004.

The previous prime is 540042157. The next prime is 540042221. The reversal of 540042181 is 181240045.

It is not a de Polignac number, because 540042181 - 2⁷ = 540042053 is a prime.

It is a super-2 number, since 2×540042181² = 583291114518473522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540042781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786891 + ... + 787576.

It is an arithmetic number, because the mean of its divisors is an integer number (78723400).

Almost surely, 2^540042181 is an apocalyptic number.

It is an amenable number.

540042181 is a deficient number, since it is larger than the sum of its proper divisors (89745019).

540042181 is an equidigital number, since it uses as much as digits as its factorization.

540042181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574488 (or 1574474 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 540042181 is about 23238.8076501356. The cubic root of 540042181 is about 814.3464875467.

The spelling of 540042181 in words is "five hundred forty million, forty-two thousand, one hundred eighty-one".