1421423120440 has 32 divisors (see below), whose sum is σ = 3308484852000. Its totient is φ = 548963411584.

The previous prime is 1421423120437. The next prime is 1421423120459. The reversal of 1421423120440 is 440213241241.

It is a junction number, because it is equal to n+sod(n) for n = 1421423120399 and 1421423120408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612681220 + ... + 612683539.

It is an arithmetic number, because the mean of its divisors is an integer number (103390151625).

Almost surely, 2^{1421423120440} is an apocalyptic number.

1421423120440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421423120440 is an abundant number, since it is smaller than the sum of its proper divisors (1887061731560).

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

1421423120440 is a wasteful number, since it uses less digits than its factorization.

1421423120440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225364799 (or 1225364795 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1421423120440 its reverse (440213241241), we get a palindrome (1861636361681).

The spelling of 1421423120440 in words is "one trillion, four hundred twenty-one billion, four hundred twenty-three million, one hundred twenty thousand, four hundred forty".