1401420443400 has 288 divisors, whose sum is σ = 4835831949000. Its totient is φ = 363446784000.

The previous prime is 1401420443359. The next prime is 1401420443411. The reversal of 1401420443400 is 43440241041.

1401420443400 is a `hidden beast` number, since 1 + 4 + 0 + 14 + 204 + 43 + 400 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 49302649764 + 1352117793636 = 222042^2 + 1162806^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 229700350 + ... + 229706450.

Almost surely, 2^{1401420443400} is an apocalyptic number.

1401420443400 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 1401420443400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2417915974500).

1401420443400 is an abundant number, since it is smaller than the sum of its proper divisors (3434411505600).

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

1401420443400 is a wasteful number, since it uses less digits than its factorization.

1401420443400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9609 (or 9597 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 1401420443400 its reverse (43440241041), we get a palindrome (1444860684441).

The spelling of 1401420443400 in words is "one trillion, four hundred one billion, four hundred twenty million, four hundred forty-three thousand, four hundred".