1243013214400 has 168 divisors, whose sum is σ = 3193709518080. Its totient is φ = 475269104640.

The previous prime is 1243013214347. The next prime is 1243013214407. The reversal of 1243013214400 is 44123103421.

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

It is not an unprimeable number, because it can be changed into a prime (1243013214407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59127091 + ... + 59148109.

Almost surely, 2^{1243013214400} is an apocalyptic number.

1243013214400 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 1243013214400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596854759040).

1243013214400 is an abundant number, since it is smaller than the sum of its proper divisors (1950696303680).

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

1243013214400 is a wasteful number, since it uses less digits than its factorization.

1243013214400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22671 (or 22656 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1243013214400 its reverse (44123103421), we get a palindrome (1287136317821).

The spelling of 1243013214400 in words is "one trillion, two hundred forty-three billion, thirteen million, two hundred fourteen thousand, four hundred".