1121424 has 40 divisors (see below), whose sum is σ = 2952192. Its totient is φ = 366720.

The previous prime is 1121423. The next prime is 1121431. The reversal of 1121424 is 4241211.

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 (1121423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2737 + ... + 3119.

2^1121424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1476096).

1121424 is an abundant number, since it is smaller than the sum of its proper divisors (1830768).

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

1121424 is a wasteful number, since it uses less digits than its factorization.

1121424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 449 counting only the distinct ones).

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

The square root of 1121424 is about 1058.9730874767. The cubic root of 1121424 is about 103.8938759663.

Adding to 1121424 its reverse (4241211), we get a palindrome (5362635).

The spelling of 1121424 in words is "one million, one hundred twenty-one thousand, four hundred twenty-four".