1303120421400 has 192 divisors, whose sum is σ = 4633087392000. Its totient is φ = 296803330560.

The previous prime is 1303120421371. The next prime is 1303120421401. The reversal of 1303120421400 is 41240213031.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303120421401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 640426 + ... + 1736774.

It is an arithmetic number, because the mean of its divisors is an integer number (24130663500).

Almost surely, 2^{1303120421400} is an apocalyptic number.

1303120421400 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 1303120421400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2316543696000).

1303120421400 is an abundant number, since it is smaller than the sum of its proper divisors (3329966970600).

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

1303120421400 is a wasteful number, since it uses less digits than its factorization.

1303120421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096658 (or 1096649 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1303120421400 its reverse (41240213031), we get a palindrome (1344360634431).

The spelling of 1303120421400 in words is "one trillion, three hundred three billion, one hundred twenty million, four hundred twenty-one thousand, four hundred".