440142424 has 16 divisors (see below), whose sum is σ = 830808000. Its totient is φ = 218593632.

The previous prime is 440142407. The next prime is 440142463. The reversal of 440142424 is 424241044.

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, 183432 + ... + 185815.

It is an arithmetic number, because the mean of its divisors is an integer number (51925500).

Almost surely, 2^440142424 is an apocalyptic number.

It is an amenable number.

440142424 is a deficient number, since it is larger than the sum of its proper divisors (390665576).

440142424 is a wasteful number, since it uses less digits than its factorization.

440142424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369402 (or 369398 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 440142424 is about 20979.5715876183. The cubic root of 440142424 is about 760.6725487085.

Adding to 440142424 its reverse (424241044), we get a palindrome (864383468).

The spelling of 440142424 in words is "four hundred forty million, one hundred forty-two thousand, four hundred twenty-four".