540146 has 4 divisors (see below), whose sum is σ = 810222.
Its totient is φ = 270072.
The previous prime is 540139. The next prime is 540149. The reversal of 540146 is 641045.
It is a happy number.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 483025 + 57121 = 695^2 + 239^2
It is not an unprimeable number, because it can be changed into a prime (540149) by changing a digit.
540146 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135035 + ... + 135038.
2540146 is an apocalyptic number.
540146 is a deficient number, since it is larger than the sum of its proper divisors (270076).
540146 is a wasteful number, since it uses less digits than its factorization.
540146 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 270075.
The product of its (nonzero) digits is 480, while the sum is 20.
The square root of 540146 is about 734.9462565385.
The cubic root of 540146 is about 81.4398668175.
It can be divided in two parts, 540 and 146, that added together give a palindrome (686).
The spelling of 540146 in words is "five hundred forty thousand, one hundred forty-six".