1212433404 has 192 divisors, whose sum is σ = 3715633152. Its totient is φ = 298598400.

The previous prime is 1212433403. The next prime is 1212433433. The reversal of 1212433404 is 4043342121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212433403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4473789 + ... + 4474059.

It is an arithmetic number, because the mean of its divisors is an integer number (19352256).

Almost surely, 2^1212433404 is an apocalyptic number.

1212433404 is a gapful number since it is divisible by the number (14) 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 1212433404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1857816576).

1212433404 is an abundant number, since it is smaller than the sum of its proper divisors (2503199748).

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

1212433404 is a wasteful number, since it uses less digits than its factorization.

1212433404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 554 counting only the distinct ones).

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

The square root of 1212433404 is about 34820.0144169987. The cubic root of 1212433404 is about 1066.3160947325.

Adding to 1212433404 its reverse (4043342121), we get a palindrome (5255775525).

The spelling of 1212433404 in words is "one billion, two hundred twelve million, four hundred thirty-three thousand, four hundred four".