542838820 has 48 divisors (see below), whose sum is σ = 1190427840. Its totient is φ = 207665024.

The previous prime is 542838787. The next prime is 542838887. The reversal of 542838820 is 28838245.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57687 + ... + 66433.

It is an arithmetic number, because the mean of its divisors is an integer number (24800580).

Almost surely, 2^542838820 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 542838820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (595213920).

542838820 is an abundant number, since it is smaller than the sum of its proper divisors (647589020).

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

542838820 is a wasteful number, since it uses less digits than its factorization.

542838820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8892 (or 8890 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 542838820 is about 23298.9016908523. The cubic root of 542838820 is about 815.7497811076.

The spelling of 542838820 in words is "five hundred forty-two million, eight hundred thirty-eight thousand, eight hundred twenty".