1122432140 has 48 divisors (see below), whose sum is σ = 2519167392. Its totient is φ = 418599936.

The previous prime is 1122432121. The next prime is 1122432149. The reversal of 1122432140 is 412342211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1122432149) 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, 20954 + ... + 51806.

It is an arithmetic number, because the mean of its divisors is an integer number (52482654).

Almost surely, 2^1122432140 is an apocalyptic number.

1122432140 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 1122432140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259583696).

1122432140 is an abundant number, since it is smaller than the sum of its proper divisors (1396735252).

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

1122432140 is a wasteful number, since it uses less digits than its factorization.

1122432140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30986 (or 30984 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1122432140 is about 33502.7183971689. The cubic root of 1122432140 is about 1039.2499955007.

Adding to 1122432140 its reverse (412342211), we get a palindrome (1534774351).

The spelling of 1122432140 in words is "one billion, one hundred twenty-two million, four hundred thirty-two thousand, one hundred forty".