1134123440 has 40 divisors (see below), whose sum is σ = 2666481120. Its totient is φ = 448549376.

The previous prime is 1134123439. The next prime is 1134123443. The reversal of 1134123440 is 443214311.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1134123443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72524 + ... + 86763.

It is an arithmetic number, because the mean of its divisors is an integer number (66662028).

Almost surely, 2^1134123440 is an apocalyptic number.

1134123440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1134123440 is an abundant number, since it is smaller than the sum of its proper divisors (1532357680).

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

1134123440 is a wasteful number, since it uses less digits than its factorization.

1134123440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159389 (or 159383 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1134123440 is about 33676.7492492966. The cubic root of 1134123440 is about 1042.8458298999.

Adding to 1134123440 its reverse (443214311), we get a palindrome (1577337751).

The spelling of 1134123440 in words is "one billion, one hundred thirty-four million, one hundred twenty-three thousand, four hundred forty".