1200421343040 has 56 divisors (see below), whose sum is σ = 3811337767200. Its totient is φ = 320112357888.

The previous prime is 1200421343027. The next prime is 1200421343047. The reversal of 1200421343040 is 403431240021.

It is a super-2 number, since 2×1200421343040² (a number of 25 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1200421343040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200421343047) 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 7 ways as a sum of consecutive naturals, for example, 625218490 + ... + 625220409.

Almost surely, 2^{1200421343040} is an apocalyptic number.

1200421343040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200421343040 is an abundant number, since it is smaller than the sum of its proper divisors (2610916424160).

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

1200421343040 is a wasteful number, since it uses less digits than its factorization.

1200421343040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250438919 (or 1250438909 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1200421343040 its reverse (403431240021), we get a palindrome (1603852583061).

The spelling of 1200421343040 in words is "one trillion, two hundred billion, four hundred twenty-one million, three hundred forty-three thousand, forty".