540421543 has 8 divisors (see below), whose sum is σ = 558615680. Its totient is φ = 522275040.

The previous prime is 540421537. The next prime is 540421573. The reversal of 540421543 is 345124045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 540421543 - 2²⁵ = 506867111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540421523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11953 + ... + 34981.

It is an arithmetic number, because the mean of its divisors is an integer number (69826960).

Almost surely, 2^540421543 is an apocalyptic number.

540421543 is a deficient number, since it is larger than the sum of its proper divisors (18194137).

540421543 is a wasteful number, since it uses less digits than its factorization.

540421543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23817.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 540421543 is about 23246.9684690284. The cubic root of 540421543 is about 814.5371268542.

Adding to 540421543 its reverse (345124045), we get a palindrome (885545588).

The spelling of 540421543 in words is "five hundred forty million, four hundred twenty-one thousand, five hundred forty-three".