545642 has 16 divisors (see below), whose sum is σ = 876960. Its totient is φ = 253872.

The previous prime is 545641. The next prime is 545647. The reversal of 545642 is 246545.

It is not an unprimeable number, because it can be changed into a prime (545641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3068 + ... + 3240.

It is an arithmetic number, because the mean of its divisors is an integer number (54810).

2⁵⁴⁵⁶⁴² is an apocalyptic number.

545642 is a deficient number, since it is larger than the sum of its proper divisors (331318).

545642 is a wasteful number, since it uses less digits than its factorization.

545642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277.

The product of its digits is 4800, while the sum is 26.

The square root of 545642 is about 738.6758423016. The cubic root of 545642 is about 81.7151528449.

The spelling of 545642 in words is "five hundred forty-five thousand, six hundred forty-two".