540001423 has 4 divisors (see below), whose sum is σ = 581540008. Its totient is φ = 498462840.

The previous prime is 540001417. The next prime is 540001433. The reversal of 540001423 is 324100045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 540001423 - 2¹³ = 539993231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 540001423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540001433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20769273 + ... + 20769298.

It is an arithmetic number, because the mean of its divisors is an integer number (145385002).

Almost surely, 2^540001423 is an apocalyptic number.

540001423 is a deficient number, since it is larger than the sum of its proper divisors (41538585).

540001423 is a wasteful number, since it uses less digits than its factorization.

540001423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41538584.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 540001423 is about 23237.9306953093. The cubic root of 540001423 is about 814.3260002772.

Adding to 540001423 its reverse (324100045), we get a palindrome (864101468).

The spelling of 540001423 in words is "five hundred forty million, one thousand, four hundred twenty-three".