540002 has 4 divisors (see below), whose sum is σ = 810006. Its totient is φ = 270000.

The previous prime is 539993. The next prime is 540041. The reversal of 540002 is 200045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200045 = 5 ⋅40009.

It can be written as a sum of positive squares in only one way, i.e., 461041 + 78961 = 679^2 + 281^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134999 + ... + 135002.

2⁵⁴⁰⁰⁰² is an apocalyptic number.

540002 is a deficient number, since it is larger than the sum of its proper divisors (270004).

540002 is a wasteful number, since it uses less digits than its factorization.

540002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270003.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 540002 is about 734.8482836613. The cubic root of 540002 is about 81.4326290317.

Adding to 540002 its reverse (200045), we get a palindrome (740047).

The spelling of 540002 in words is "five hundred forty thousand, two".