1421440240444 has 96 divisors (see below), whose sum is σ = 2904742184960. Its totient is φ = 596095718400.

The previous prime is 1421440240439. The next prime is 1421440240471. The reversal of 1421440240444 is 4440420441241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112476094 + ... + 112488730.

Almost surely, 2^{1421440240444} is an apocalyptic number.

1421440240444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1421440240444 is an abundant number, since it is smaller than the sum of its proper divisors (1483301944516).

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

1421440240444 is a wasteful number, since it uses less digits than its factorization.

1421440240444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13179 (or 13177 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 34.

Adding to 1421440240444 its reverse (4440420441241), we get a palindrome (5861860681685).

The spelling of 1421440240444 in words is "one trillion, four hundred twenty-one billion, four hundred forty million, two hundred forty thousand, four hundred forty-four".