542609965 has 4 divisors (see below), whose sum is σ = 651131964. Its totient is φ = 434087968.

The previous prime is 542609959. The next prime is 542609983. The reversal of 542609965 is 569906245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83064996 + 459544969 = 9114^2 + 21437^2 .

It is a cyclic number.

It is not a de Polignac number, because 542609965 - 2⁵ = 542609933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 54260992 + ... + 54261001.

It is an arithmetic number, because the mean of its divisors is an integer number (162782991).

Almost surely, 2^542609965 is an apocalyptic number.

It is an amenable number.

542609965 is a deficient number, since it is larger than the sum of its proper divisors (108521999).

542609965 is a wasteful number, since it uses less digits than its factorization.

542609965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108521998.

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

The square root of 542609965 is about 23293.9898900983. The cubic root of 542609965 is about 815.6351278866.

The spelling of 542609965 in words is "five hundred forty-two million, six hundred nine thousand, nine hundred sixty-five".