540030420 has 72 divisors (see below), whose sum is σ = 1640727816. Its totient is φ = 143776512.

The previous prime is 540030419. The next prime is 540030427. The reversal of 540030420 is 24030045.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 170929476 + 369100944 = 13074^2 + 19212^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 540030393 and 540030402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540030427) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 129894 + ... + 133986.

Almost surely, 2^540030420 is an apocalyptic number.

It is an amenable number.

540030420 is an abundant number, since it is smaller than the sum of its proper divisors (1100697396).

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

540030420 is a wasteful number, since it uses less digits than its factorization.

540030420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841 (or 4836 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 540030420 is about 23238.5546022122. The cubic root of 540030420 is about 814.3405759106.

Adding to 540030420 its reverse (24030045), we get a palindrome (564060465).

The spelling of 540030420 in words is "five hundred forty million, thirty thousand, four hundred twenty".