1123421412 has 48 divisors (see below), whose sum is σ = 2658539520. Its totient is φ = 369189408.

The previous prime is 1123421393. The next prime is 1123421413. The reversal of 1123421412 is 2141243211.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1123421413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293503 + ... + 297305.

It is an arithmetic number, because the mean of its divisors is an integer number (55386240).

Almost surely, 2^1123421412 is an apocalyptic number.

1123421412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123421412 is an abundant number, since it is smaller than the sum of its proper divisors (1535118108).

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

1123421412 is a wasteful number, since it uses less digits than its factorization.

1123421412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152 (or 4150 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 1123421412 is about 33517.4792011571. The cubic root of 1123421412 is about 1039.5552252451. Note that the first 3 decimals are identical.

Adding to 1123421412 its reverse (2141243211), we get a palindrome (3264664623).

The spelling of 1123421412 in words is "one billion, one hundred twenty-three million, four hundred twenty-one thousand, four hundred twelve".