540243212 has 12 divisors (see below), whose sum is σ = 947126880. Its totient is φ = 269635536.

The previous prime is 540243199. The next prime is 540243217. The reversal of 540243212 is 212342045.

It is a happy number.

It is a super-2 number, since 2×540243212² = 583725456224153888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (540243217) 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, 119012 + ... + 123467.

It is an arithmetic number, because the mean of its divisors is an integer number (78927240).

Almost surely, 2^540243212 is an apocalyptic number.

It is an amenable number.

540243212 is a deficient number, since it is larger than the sum of its proper divisors (406883668).

540243212 is a wasteful number, since it uses less digits than its factorization.

540243212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243040 (or 243038 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 540243212 is about 23243.1325771721. The cubic root of 540243212 is about 814.4475219875.

Adding to 540243212 its reverse (212342045), we get a palindrome (752585257).

The spelling of 540243212 in words is "five hundred forty million, two hundred forty-three thousand, two hundred twelve".