549642 has 16 divisors (see below), whose sum is σ = 1111392. Its totient is φ = 181200.

The previous prime is 549641. The next prime is 549643. The reversal of 549642 is 246945.

It is an interprime number because it is at equal distance from previous prime (549641) and next prime (549643).

It is a d-powerful number, because it can be written as 5 + 4 + 6⁴ + 9⁶ + 4⁷ + 2⁹ .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (549641) 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 7 ways as a sum of consecutive naturals, for example, 153 + ... + 1059.

It is an arithmetic number, because the mean of its divisors is an integer number (69462).

2⁵⁴⁹⁶⁴² is an apocalyptic number.

549642 is an abundant number, since it is smaller than the sum of its proper divisors (561750).

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

549642 is a wasteful number, since it uses less digits than its factorization.

549642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013.

The product of its digits is 8640, while the sum is 30.

The square root of 549642 is about 741.3784458696. The cubic root of 549642 is about 81.9143464129.

The spelling of 549642 in words is "five hundred forty-nine thousand, six hundred forty-two".