545442 has 8 divisors (see below), whose sum is σ = 1090896. Its totient is φ = 181812.

The previous prime is 545437. The next prime is 545443. The reversal of 545442 is 244545.

It is a sphenic number, since it is the product of 3 distinct primes.

545442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (545443) 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, 45448 + ... + 45459.

It is an arithmetic number, because the mean of its divisors is an integer number (136362).

2⁵⁴⁵⁴⁴² is an apocalyptic number.

545442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

545442 is a wasteful number, since it uses less digits than its factorization.

545442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90912.

The product of its digits is 3200, while the sum is 24.

The square root of 545442 is about 738.5404525143. The cubic root of 545442 is about 81.7051676484.

Adding to 545442 its reverse (244545), we get a palindrome (789987).

The spelling of 545442 in words is "five hundred forty-five thousand, four hundred forty-two".