542279891042 has 18 divisors (see below), whose sum is σ = 818270757633. Its totient is φ = 269532510664.

The previous prime is 542279891017. The next prime is 542279891071. The reversal of 542279891042 is 240198972245.

It can be written as a sum of positive squares in 2 ways, for example, as 455153971801 + 87125919241 = 674651^2 + 295171^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=520711.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 186413084 + ... + 186415992.

Almost surely, 2^542279891042 is an apocalyptic number.

542279891042 is a deficient number, since it is larger than the sum of its proper divisors (275990866591).

542279891042 is an frugal number, since it uses more digits than its factorization.

542279891042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6178 (or 3090 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 542279891042 in words is "five hundred forty-two billion, two hundred seventy-nine million, eight hundred ninety-one thousand, forty-two".