1243121433000 has 128 divisors (see below), whose sum is σ = 3916941200640. Its totient is φ = 328216800000.

The previous prime is 1243121432983. The next prime is 1243121433041. The reversal of 1243121433000 is 3341213421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1748356 + ... + 2354355.

It is an arithmetic number, because the mean of its divisors is an integer number (30601103130).

Almost surely, 2^{1243121433000} is an apocalyptic number.

1243121433000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243121433000 is an abundant number, since it is smaller than the sum of its proper divisors (2673819767640).

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

1243121433000 is a wasteful number, since it uses less digits than its factorization.

1243121433000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102836 (or 4102822 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1243121433000 its reverse (3341213421), we get a palindrome (1246462646421).

The spelling of 1243121433000 in words is "one trillion, two hundred forty-three billion, one hundred twenty-one million, four hundred thirty-three thousand".