542965509 has 12 divisors (see below), whose sum is σ = 785450796. Its totient is φ = 361438272.

The previous prime is 542965487. The next prime is 542965541. The reversal of 542965509 is 905569245.

It is a happy number.

542965509 is a `hidden beast` number, since 5 + 4 + 2 + 96 + 550 + 9 = 666.

542965509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 434597409 + 108368100 = 20847^2 + 10410^2 .

It is not a de Polignac number, because 542965509 - 2²⁰ = 541916933 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542965559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38464 + ... + 50649.

It is an arithmetic number, because the mean of its divisors is an integer number (65454233).

Almost surely, 2^542965509 is an apocalyptic number.

It is an amenable number.

542965509 is a deficient number, since it is larger than the sum of its proper divisors (242485287).

542965509 is a wasteful number, since it uses less digits than its factorization.

542965509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89796 (or 89793 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The square root of 542965509 is about 23301.6203084678. The cubic root of 542965509 is about 815.8132367053.

The spelling of 542965509 in words is "five hundred forty-two million, nine hundred sixty-five thousand, five hundred nine".