1421823894400 has 384 divisors, whose sum is σ = 4335657500160. Its totient is φ = 448655155200.

The previous prime is 1421823894391. The next prime is 1421823894473. The reversal of 1421823894400 is 44983281241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101039365 + ... + 101053435.

It is an arithmetic number, because the mean of its divisors is an integer number (11290774740).

Almost surely, 2^{1421823894400} is an apocalyptic number.

1421823894400 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 1421823894400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2167828750080).

1421823894400 is an abundant number, since it is smaller than the sum of its proper divisors (2913833605760).

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

1421823894400 is a wasteful number, since it uses less digits than its factorization.

1421823894400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14462 (or 14445 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 1421823894400 in words is "one trillion, four hundred twenty-one billion, eight hundred twenty-three million, eight hundred ninety-four thousand, four hundred".