542320 has 20 divisors (see below), whose sum is σ = 1261080. Its totient is φ = 216896.

The previous prime is 542299. The next prime is 542323. The reversal of 542320 is 23245.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×542320² = 588221964800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 542294 and 542303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3310 + ... + 3469.

It is an arithmetic number, because the mean of its divisors is an integer number (63054).

2⁵⁴²³²⁰ is an apocalyptic number.

It is an amenable number.

542320 is an abundant number, since it is smaller than the sum of its proper divisors (718760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542320 is a wasteful number, since it uses less digits than its factorization.

542320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792 (or 6786 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 542320 is about 736.4237910334. The cubic root of 542320 is about 81.5489813083.

Adding to 542320 its reverse (23245), we get a palindrome (565565).

It can be divided in two parts, 5 and 42320, that multiplied together give a square (211600 = 460²).

The spelling of 542320 in words is "five hundred forty-two thousand, three hundred twenty".