540421232 has 20 divisors (see below), whose sum is σ = 1127610120. Its totient is φ = 249425088.

The previous prime is 540421207. The next prime is 540421247. The reversal of 540421232 is 232124045.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 540421198 and 540421207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298882 + ... + 1299297.

It is an arithmetic number, because the mean of its divisors is an integer number (56380506).

Almost surely, 2^540421232 is an apocalyptic number.

540421232 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

540421232 is an abundant number, since it is smaller than the sum of its proper divisors (587188888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

540421232 is a wasteful number, since it uses less digits than its factorization.

540421232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598200 (or 2598194 counting only the distinct ones).

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

The square root of 540421232 is about 23246.9617799832. The cubic root of 540421232 is about 814.5369706051.

Adding to 540421232 its reverse (232124045), we get a palindrome (772545277).

The spelling of 540421232 in words is "five hundred forty million, four hundred twenty-one thousand, two hundred thirty-two".