542564709 has 4 divisors (see below), whose sum is σ = 723419616. Its totient is φ = 361709804.

The previous prime is 542564623. The next prime is 542564713. The reversal of 542564709 is 907465245.

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 542564709 - 2⁸ = 542564453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542564909) 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, 90427449 + ... + 90427454.

It is an arithmetic number, because the mean of its divisors is an integer number (180854904).

Almost surely, 2^542564709 is an apocalyptic number.

It is an amenable number.

542564709 is a deficient number, since it is larger than the sum of its proper divisors (180854907).

542564709 is a wasteful number, since it uses less digits than its factorization.

542564709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180854906.

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 542564709 is about 23293.0184604744. The cubic root of 542564709 is about 815.6124514327.

The spelling of 542564709 in words is "five hundred forty-two million, five hundred sixty-four thousand, seven hundred nine".