542099808 has 144 divisors (see below), whose sum is σ = 1642376736. Its totient is φ = 169021440.

The previous prime is 542099743. The next prime is 542099819. The reversal of 542099808 is 808990245.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1287438 + ... + 1287858.

It is an arithmetic number, because the mean of its divisors is an integer number (11405394).

Almost surely, 2^542099808 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 542099808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821188368).

542099808 is an abundant number, since it is smaller than the sum of its proper divisors (1100276928).

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

542099808 is a wasteful number, since it uses less digits than its factorization.

542099808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 542099808 is about 23283.0369153167. The cubic root of 542099808 is about 815.3794301356.

The spelling of 542099808 in words is "five hundred forty-two million, ninety-nine thousand, eight hundred eight".