549942 has 16 divisors (see below), whose sum is σ = 1108992. Its totient is φ = 181800.

The previous prime is 549937. The next prime is 549943. The reversal of 549942 is 249945.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549943) by changing a digit.

549942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (69312).

2⁵⁴⁹⁹⁴² is an apocalyptic number.

549942 is an abundant number, since it is smaller than the sum of its proper divisors (559050).

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

549942 is a wasteful number, since it uses less digits than its factorization.

549942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763.

The product of its digits is 12960, while the sum is 33.

The square root of 549942 is about 741.5807440866. The cubic root of 549942 is about 81.9292469204.

The spelling of 549942 in words is "five hundred forty-nine thousand, nine hundred forty-two".