540481442 has 18 divisors (see below), whose sum is σ = 862108497. Its totient is φ = 254081184.

The previous prime is 540481427. The next prime is 540481453. The reversal of 540481442 is 244184045.

It can be written as a sum of positive squares in 2 ways, for example, as 494662081 + 45819361 = 22241^2 + 6769^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16439.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540481399 and 540481408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 558443 + ... + 559409.

Almost surely, 2^540481442 is an apocalyptic number.

540481442 is a deficient number, since it is larger than the sum of its proper divisors (321627055).

540481442 is an frugal number, since it uses more digits than its factorization.

540481442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

The square root of 540481442 is about 23248.2567518513. The cubic root of 540481442 is about 814.5672195090.

Multiplying 540481442 by its sum of digits (32), we get a square (17295406144 = 131512²).

The spelling of 540481442 in words is "five hundred forty million, four hundred eighty-one thousand, four hundred forty-two".