1421214543440 has 40 divisors (see below), whose sum is σ = 3321623973888. Its totient is φ = 565509445760.

The previous prime is 1421214543407. The next prime is 1421214543451. The reversal of 1421214543440 is 443454121241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1421214543440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46490432 + ... + 46520991.

Almost surely, 2^{1421214543440} is an apocalyptic number.

1421214543440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421214543440 is an abundant number, since it is smaller than the sum of its proper divisors (1900409430448).

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

1421214543440 is a wasteful number, since it uses less digits than its factorization.

1421214543440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93011627 (or 93011621 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

Adding to 1421214543440 its reverse (443454121241), we get a palindrome (1864668664681).

The spelling of 1421214543440 in words is "one trillion, four hundred twenty-one billion, two hundred fourteen million, five hundred forty-three thousand, four hundred forty".