542424420 has 72 divisors (see below), whose sum is σ = 1654543800. Its totient is φ = 143838720.

The previous prime is 542424397. The next prime is 542424427. The reversal of 542424420 is 24424245.

It can be written as a sum of positive squares in 4 ways, for example, as 8259876 + 534164544 = 2874^2 + 23112^2 .

It is not an unprimeable number, because it can be changed into a prime (542424427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24256 + ... + 40904.

It is an arithmetic number, because the mean of its divisors is an integer number (22979775).

Almost surely, 2^542424420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542424420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827271900).

542424420 is an abundant number, since it is smaller than the sum of its proper divisors (1112119380).

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

542424420 is a wasteful number, since it uses less digits than its factorization.

542424420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16845 (or 16840 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 542424420 is about 23290.0068699002. The cubic root of 542424420 is about 815.5421487164.

Adding to 542424420 its reverse (24424245), we get a palindrome (566848665).

The spelling of 542424420 in words is "five hundred forty-two million, four hundred twenty-four thousand, four hundred twenty".