540442 has 8 divisors (see below), whose sum is σ = 926496. Its totient is φ = 231612.

The previous prime is 540437. The next prime is 540461. The reversal of 540442 is 244045.

540442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

540442 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 3 ways as a sum of consecutive naturals, for example, 19288 + ... + 19315.

It is an arithmetic number, because the mean of its divisors is an integer number (115812).

2⁵⁴⁰⁴⁴² is an apocalyptic number.

540442 is a deficient number, since it is larger than the sum of its proper divisors (386054).

540442 is a wasteful number, since it uses less digits than its factorization.

540442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38612.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 540442 is about 735.1476042265. The cubic root of 540442 is about 81.4547404495.

Adding to 540442 its reverse (244045), we get a palindrome (784487).

The spelling of 540442 in words is "five hundred forty thousand, four hundred forty-two".