1200401412 has 72 divisors (see below), whose sum is σ = 3276524160. Its totient is φ = 341046720.

The previous prime is 1200401407. The next prime is 1200401431. The reversal of 1200401412 is 2141040021.

It is a junction number, because it is equal to n+sod(n) for n = 1200401391 and 1200401400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100789 + ... + 112067.

It is an arithmetic number, because the mean of its divisors is an integer number (45507280).

Almost surely, 2^1200401412 is an apocalyptic number.

1200401412 is a gapful number since it is divisible by the number (12) 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 1200401412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638262080).

1200401412 is an abundant number, since it is smaller than the sum of its proper divisors (2076122748).

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

1200401412 is a wasteful number, since it uses less digits than its factorization.

1200401412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11481 (or 11472 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1200401412 is about 34646.8095500870. The cubic root of 1200401412 is about 1062.7770459457. Note that the first 3 decimals are identical.

Adding to 1200401412 its reverse (2141040021), we get a palindrome (3341441433).

The spelling of 1200401412 in words is "one billion, two hundred million, four hundred one thousand, four hundred twelve".