542723947 has 4 divisors (see below), whose sum is σ = 543262840. Its totient is φ = 542185056.

The previous prime is 542723933. The next prime is 542723957. The reversal of 542723947 is 749327245.

542723947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 542723947 - 2¹¹ = 542721899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542723927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267933 + ... + 269950.

It is an arithmetic number, because the mean of its divisors is an integer number (135815710).

Almost surely, 2^542723947 is an apocalyptic number.

542723947 is a deficient number, since it is larger than the sum of its proper divisors (538893).

542723947 is a wasteful number, since it uses less digits than its factorization.

542723947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538892.

The product of its digits is 423360, while the sum is 43.

The square root of 542723947 is about 23296.4363583789. The cubic root of 542723947 is about 815.6922353366.

The spelling of 542723947 in words is "five hundred forty-two million, seven hundred twenty-three thousand, nine hundred forty-seven".