542208669 has 4 divisors (see below), whose sum is σ = 722944896. Its totient is φ = 361472444.

The previous prime is 542208637. The next prime is 542208671. The reversal of 542208669 is 966802245.

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 a cyclic number.

It is not a de Polignac number, because 542208669 - 2⁵ = 542208637 is a prime.

It is a super-2 number, since 2×542208669² = 587980481477503122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 542208669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542258669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90368109 + ... + 90368114.

It is an arithmetic number, because the mean of its divisors is an integer number (180736224).

Almost surely, 2^542208669 is an apocalyptic number.

It is an amenable number.

542208669 is a deficient number, since it is larger than the sum of its proper divisors (180736227).

542208669 is a wasteful number, since it uses less digits than its factorization.

542208669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180736226.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 542208669 is about 23285.3745728945. The cubic root of 542208669 is about 815.4340062351.

The spelling of 542208669 in words is "five hundred forty-two million, two hundred eight thousand, six hundred sixty-nine".