1200321400 has 48 divisors (see below), whose sum is σ = 2836526040. Its totient is φ = 472252800.

The previous prime is 1200321389. The next prime is 1200321433. The reversal of 1200321400 is 41230021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36994 + ... + 61393.

Almost surely, 2^1200321400 is an apocalyptic number.

1200321400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200321400 is an abundant number, since it is smaller than the sum of its proper divisors (1636204640).

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

1200321400 is a wasteful number, since it uses less digits than its factorization.

1200321400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98464 (or 98455 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1200321400 is about 34645.6548502117. The cubic root of 1200321400 is about 1062.7534325095.

Adding to 1200321400 its reverse (41230021), we get a palindrome (1241551421).

The spelling of 1200321400 in words is "one billion, two hundred million, three hundred twenty-one thousand, four hundred".