1440321021142 has 8 divisors (see below), whose sum is σ = 2218872924576. Its totient is φ = 700696712952.

The previous prime is 1440321021121. The next prime is 1440321021157. The reversal of 1440321021142 is 2411201230441.

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

It is a super-4 number, since 4×1440321021142⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 9731898718 + ... + 9731898865.

It is an arithmetic number, because the mean of its divisors is an integer number (277359115572).

Almost surely, 2^{1440321021142} is an apocalyptic number.

1440321021142 is a deficient number, since it is larger than the sum of its proper divisors (778551903434).

1440321021142 is a wasteful number, since it uses less digits than its factorization.

1440321021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19463797622.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1440321021142 its reverse (2411201230441), we get a palindrome (3851522251583).

The spelling of 1440321021142 in words is "one trillion, four hundred forty billion, three hundred twenty-one million, twenty-one thousand, one hundred forty-two".