654042 has 16 divisors (see below), whose sum is σ = 1330272. Its totient is φ = 214320.

The previous prime is 654029. The next prime is 654047. The reversal of 654042 is 240456.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654042.

It is not an unprimeable number, because it can be changed into a prime (654047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528 + ... + 1259.

It is an arithmetic number, because the mean of its divisors is an integer number (83142).

2⁶⁵⁴⁰⁴² is an apocalyptic number.

654042 is an abundant number, since it is smaller than the sum of its proper divisors (676230).

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

654042 is a wasteful number, since it uses less digits than its factorization.

654042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 654042 is about 808.7286318661. The cubic root of 654042 is about 86.8030954463.

Adding to 654042 its reverse (240456), we get a palindrome (894498).

The spelling of 654042 in words is "six hundred fifty-four thousand, forty-two".