1125218340 has 72 divisors (see below), whose sum is σ = 3434191488. Its totient is φ = 298209600.

The previous prime is 1125218273. The next prime is 1125218363. The reversal of 1125218340 is 438125211.

It is a super-2 number, since 2×1125218340² = 2532232625344711200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10165 + ... + 48515.

It is an arithmetic number, because the mean of its divisors is an integer number (47697104).

Almost surely, 2^1125218340 is an apocalyptic number.

1125218340 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 1125218340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717095744).

1125218340 is an abundant number, since it is smaller than the sum of its proper divisors (2308973148).

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

1125218340 is a wasteful number, since it uses less digits than its factorization.

1125218340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38529 (or 38524 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1125218340 is about 33544.2743251363. The cubic root of 1125218340 is about 1040.1091909517.

It can be divided in two parts, 11252 and 18340, that added together give a palindrome (29592).

The spelling of 1125218340 in words is "one billion, one hundred twenty-five million, two hundred eighteen thousand, three hundred forty".