440220142 has 8 divisors (see below), whose sum is σ = 674379936. Its totient is φ = 215426832.

The previous prime is 440220133. The next prime is 440220163. The reversal of 440220142 is 241022044.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2341503 + ... + 2341690.

It is an arithmetic number, because the mean of its divisors is an integer number (84297492).

Almost surely, 2^440220142 is an apocalyptic number.

440220142 is a deficient number, since it is larger than the sum of its proper divisors (234159794).

440220142 is a wasteful number, since it uses less digits than its factorization.

440220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683242.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 440220142 is about 20981.4237362482. The cubic root of 440220142 is about 760.7173179065.

Adding to 440220142 its reverse (241022044), we get a palindrome (681242186).

The spelling of 440220142 in words is "four hundred forty million, two hundred twenty thousand, one hundred forty-two".