1243000412400 has 120 divisors (see below), whose sum is σ = 4049232082560. Its totient is φ = 325848677120.

The previous prime is 1243000412383. The next prime is 1243000412443. The reversal of 1243000412400 is 42140003421.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8707452 + ... + 8849051.

It is an arithmetic number, because the mean of its divisors is an integer number (33743600688).

Almost surely, 2^{1243000412400} is an apocalyptic number.

1243000412400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243000412400 is an abundant number, since it is smaller than the sum of its proper divisors (2806231670160).

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

1243000412400 is a wasteful number, since it uses less digits than its factorization.

1243000412400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17556583 (or 17556572 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1243000412400 its reverse (42140003421), we get a palindrome (1285140415821).

The spelling of 1243000412400 in words is "one trillion, two hundred forty-three billion, four hundred twelve thousand, four hundred".