542965842 has 80 divisors (see below), whose sum is σ = 1244378520. Its totient is φ = 176919552.

The previous prime is 542965777. The next prime is 542965847. The reversal of 542965842 is 248569245.

542965842 is a `hidden beast` number, since 542 + 9 + 65 + 8 + 42 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 374770881 + 168194961 = 19359^2 + 12969^2 .

It is not an unprimeable number, because it can be changed into a prime (542965847) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1712668 + ... + 1712984.

Almost surely, 2^542965842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542965842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622189260).

542965842 is an abundant number, since it is smaller than the sum of its proper divisors (701412678).

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

542965842 is a wasteful number, since it uses less digits than its factorization.

542965842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 528 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 542965842 is about 23301.6274538926. The cubic root of 542965842 is about 815.8134034843.

The spelling of 542965842 in words is "five hundred forty-two million, nine hundred sixty-five thousand, eight hundred forty-two".