540003121 has 8 divisors (see below), whose sum is σ = 617722880. Its totient is φ = 462427488.

The previous prime is 540003089. The next prime is 540003143. The reversal of 540003121 is 121300045.

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 540003121 - 2⁵ = 540003089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540003095 and 540003104.

It is not an unprimeable number, because it can be changed into a prime (540003221) 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, 27876 + ... + 43093.

It is an arithmetic number, because the mean of its divisors is an integer number (77215360).

Almost surely, 2^540003121 is an apocalyptic number.

It is an amenable number.

540003121 is a deficient number, since it is larger than the sum of its proper divisors (77719759).

540003121 is a wasteful number, since it uses less digits than its factorization.

540003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72063.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 540003121 is about 23237.9672303754. The cubic root of 540003121 is about 814.3268538083.

Adding to 540003121 its reverse (121300045), we get a palindrome (661303166).

It can be divided in two parts, 54000 and 3121, that added together give a square (57121 = 239²).

The spelling of 540003121 in words is "five hundred forty million, three thousand, one hundred twenty-one".