1423221203040 has 768 divisors, whose sum is σ = 5723610439680. Its totient is φ = 289242316800.

The previous prime is 1423221202937. The next prime is 1423221203057. The reversal of 1423221203040 is 403021223241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1423221203040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 163227801 + ... + 163236519.

It is an arithmetic number, because the mean of its divisors is an integer number (7452617760).

Almost surely, 2^{1423221203040} is an apocalyptic number.

1423221203040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423221203040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2861805219840).

1423221203040 is an abundant number, since it is smaller than the sum of its proper divisors (4300389236640).

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

1423221203040 is a wasteful number, since it uses less digits than its factorization.

1423221203040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8895 (or 8887 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1423221203040 its reverse (403021223241), we get a palindrome (1826242426281).

It can be divided in two parts, 1423221 and 203040, that added together give a palindrome (1626261).

The spelling of 1423221203040 in words is "one trillion, four hundred twenty-three billion, two hundred twenty-one million, two hundred three thousand, forty".