440443142 has 32 divisors (see below), whose sum is σ = 712454400. Its totient is φ = 203580000.

The previous prime is 440443139. The next prime is 440443189. The reversal of 440443142 is 241344044.

It is a happy number.

It is a super-2 number, since 2×440443142² = 387980322669664328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337892 + ... + 339192.

It is an arithmetic number, because the mean of its divisors is an integer number (22264200).

Almost surely, 2^440443142 is an apocalyptic number.

440443142 is a deficient number, since it is larger than the sum of its proper divisors (272011258).

440443142 is a wasteful number, since it uses less digits than its factorization.

440443142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 440443142 is about 20986.7372881065. The cubic root of 440443142 is about 760.8457470788.

Adding to 440443142 its reverse (241344044), we get a palindrome (681787186).

The spelling of 440443142 in words is "four hundred forty million, four hundred forty-three thousand, one hundred forty-two".