542509669 has 8 divisors (see below), whose sum is σ = 591637760. Its totient is φ = 494438256.

The previous prime is 542509637. The next prime is 542509691. The reversal of 542509669 is 966905245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 542509669 - 2⁵ = 542509637 is a prime.

It is a super-2 number, since 2×542509669² = 588633481916979122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542509619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263097 + ... + 265150.

It is an arithmetic number, because the mean of its divisors is an integer number (73954720).

Almost surely, 2^542509669 is an apocalyptic number.

It is an amenable number.

542509669 is a deficient number, since it is larger than the sum of its proper divisors (49128091).

542509669 is a wasteful number, since it uses less digits than its factorization.

542509669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528339.

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 542509669 is about 23291.8369606178. The cubic root of 542509669 is about 815.5848708040.

The spelling of 542509669 in words is "five hundred forty-two million, five hundred nine thousand, six hundred sixty-nine".