540142220 has 24 divisors (see below), whose sum is σ = 1135731408. Its totient is φ = 215784000.

The previous prime is 540142193. The next prime is 540142237. The reversal of 540142220 is 22241045.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 540142192 and 540142201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431 + ... + 32870.

It is an arithmetic number, because the mean of its divisors is an integer number (47322142).

Almost surely, 2^540142220 is an apocalyptic number.

It is an amenable number.

540142220 is an abundant number, since it is smaller than the sum of its proper divisors (595589188).

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

540142220 is a wasteful number, since it uses less digits than its factorization.

540142220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34121 (or 34119 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 540142220 is about 23240.9599629619. The cubic root of 540142220 is about 814.3967684206.

Adding to 540142220 its reverse (22241045), we get a palindrome (562383265).

The spelling of 540142220 in words is "five hundred forty million, one hundred forty-two thousand, two hundred twenty".