440142 has 16 divisors (see below), whose sum is σ = 889680. Its totient is φ = 145152.

The previous prime is 440131. The next prime is 440159. The reversal of 440142 is 241044.

440142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440142.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318 + ... + 990.

It is an arithmetic number, because the mean of its divisors is an integer number (55605).

2⁴⁴⁰¹⁴² is an apocalyptic number.

440142 is an abundant number, since it is smaller than the sum of its proper divisors (449538).

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

440142 is a wasteful number, since it uses less digits than its factorization.

440142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 440142 is about 663.4319859639. The cubic root of 440142 is about 76.0672304450.

Adding to 440142 its reverse (241044), we get a palindrome (681186).

The spelling of 440142 in words is "four hundred forty thousand, one hundred forty-two", and thus it is an iban number.