126330402400 has 144 divisors (see below), whose sum is σ = 317603265840. Its totient is φ = 49032345600.

The previous prime is 126330402313. The next prime is 126330402409. The reversal of 126330402400 is 4204033621.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126330402409) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11212770 + ... + 11224030.

It is an arithmetic number, because the mean of its divisors is an integer number (2205578235).

Almost surely, 2^126330402400 is an apocalyptic number.

126330402400 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 126330402400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158801632920).

126330402400 is an abundant number, since it is smaller than the sum of its proper divisors (191272863440).

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

126330402400 is a wasteful number, since it uses less digits than its factorization.

126330402400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11697 (or 11684 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The spelling of 126330402400 in words is "one hundred twenty-six billion, three hundred thirty million, four hundred two thousand, four hundred".