1122542140 has 48 divisors (see below), whose sum is σ = 2468809728. Its totient is φ = 427927104.

The previous prime is 1122542119. The next prime is 1122542153. The reversal of 1122542140 is 412452211.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 125869 + ... + 134491.

It is an arithmetic number, because the mean of its divisors is an integer number (51433536).

Almost surely, 2^1122542140 is an apocalyptic number.

1122542140 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 1122542140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234404864).

1122542140 is an abundant number, since it is smaller than the sum of its proper divisors (1346267588).

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

1122542140 is a wasteful number, since it uses less digits than its factorization.

1122542140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8938 (or 8936 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1122542140 is about 33504.3600147802. The cubic root of 1122542140 is about 1039.2839437343.

Adding to 1122542140 its reverse (412452211), we get a palindrome (1534994351).

The spelling of 1122542140 in words is "one billion, one hundred twenty-two million, five hundred forty-two thousand, one hundred forty".