1224133140 has 96 divisors (see below), whose sum is σ = 3764920320. Its totient is φ = 295802496.

The previous prime is 1224133129. The next prime is 1224133151. The reversal of 1224133140 is 413314221.

It is an interprime number because it is at equal distance from previous prime (1224133129) and next prime (1224133151).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2877 + ... + 49563.

It is an arithmetic number, because the mean of its divisors is an integer number (39217920).

Almost surely, 2^1224133140 is an apocalyptic number.

1224133140 is a gapful number since it is divisible by the number (10) 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 1224133140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1882460160).

1224133140 is an abundant number, since it is smaller than the sum of its proper divisors (2540787180).

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

1224133140 is a wasteful number, since it uses less digits than its factorization.

1224133140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46741 (or 46739 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1224133140 is about 34987.6140941334. The cubic root of 1224133140 is about 1069.7350320700.

Adding to 1224133140 its reverse (413314221), we get a palindrome (1637447361).

The spelling of 1224133140 in words is "one billion, two hundred twenty-four million, one hundred thirty-three thousand, one hundred forty".