1375400421120 has 576 divisors, whose sum is σ = 4956279164928. Its totient is φ = 322379366400.

The previous prime is 1375400421119. The next prime is 1375400421137. The reversal of 1375400421120 is 211240045731.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1258371294 + ... + 1258372386.

It is an arithmetic number, because the mean of its divisors is an integer number (8604651328).

Almost surely, 2^{1375400421120} is an apocalyptic number.

1375400421120 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 1375400421120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2478139582464).

1375400421120 is an abundant number, since it is smaller than the sum of its proper divisors (3580878743808).

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

1375400421120 is an equidigital number, since it uses as much as digits as its factorization.

1375400421120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

Adding to 1375400421120 its reverse (211240045731), we get a palindrome (1586640466851).

The spelling of 1375400421120 in words is "one trillion, three hundred seventy-five billion, four hundred million, four hundred twenty-one thousand, one hundred twenty".