542472002203809 has 4 divisors (see below), whose sum is σ = 723296002938416. Its totient is φ = 361648001469204.

The previous prime is 542472002203793. The next prime is 542472002203811. The reversal of 542472002203809 is 908302200274245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 542472002203809 - 2⁴ = 542472002203793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542472002203829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90412000367299 + ... + 90412000367304.

It is an arithmetic number, because the mean of its divisors is an integer number (180824000734604).

Almost surely, 2^{542472002203809} is an apocalyptic number.

It is an amenable number.

542472002203809 is a deficient number, since it is larger than the sum of its proper divisors (180824000734607).

542472002203809 is a wasteful number, since it uses less digits than its factorization.

542472002203809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180824000734606.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 542472002203809 in words is "five hundred forty-two trillion, four hundred seventy-two billion, two million, two hundred three thousand, eight hundred nine".