542736321 has 4 divisors (see below), whose sum is σ = 723648432. Its totient is φ = 361824212.

The previous prime is 542736263. The next prime is 542736347. The reversal of 542736321 is 123637245.

542736321 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, 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 542736321 - 2⁷ = 542736193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (542736371) 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, 90456051 + ... + 90456056.

It is an arithmetic number, because the mean of its divisors is an integer number (180912108).

Almost surely, 2^542736321 is an apocalyptic number.

It is an amenable number.

542736321 is a deficient number, since it is larger than the sum of its proper divisors (180912111).

542736321 is a wasteful number, since it uses less digits than its factorization.

542736321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180912110.

The product of its digits is 30240, while the sum is 33.

The square root of 542736321 is about 23296.7019339648. The cubic root of 542736321 is about 815.6984344974.

The spelling of 542736321 in words is "five hundred forty-two million, seven hundred thirty-six thousand, three hundred twenty-one".