1243424011400 has 48 divisors (see below), whose sum is σ = 2891271494400. Its totient is φ = 497316156480.

The previous prime is 1243424011393. The next prime is 1243424011409. The reversal of 1243424011400 is 41104243421.

It is a super-2 number, since 2×1243424011400² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1243424011400.

It is not an unprimeable number, because it can be changed into a prime (1243424011409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1558469 + ... + 2217131.

It is an arithmetic number, because the mean of its divisors is an integer number (60234822800).

Almost surely, 2^{1243424011400} is an apocalyptic number.

1243424011400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243424011400 is an abundant number, since it is smaller than the sum of its proper divisors (1647847483000).

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

1243424011400 is a wasteful number, since it uses less digits than its factorization.

1243424011400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668118 (or 668109 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 1243424011400 its reverse (41104243421), we get a palindrome (1284528254821).

The spelling of 1243424011400 in words is "one trillion, two hundred forty-three billion, four hundred twenty-four million, eleven thousand, four hundred".