1123120040 has 64 divisors (see below), whose sum is σ = 2894918400. Its totient is φ = 384150528.

The previous prime is 1123120027. The next prime is 1123120051. The reversal of 1123120040 is 400213211.

It is a super-2 number, since 2×1123120040² = 2522797248499203200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1123119997 and 1123120024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118352 + ... + 127488.

It is an arithmetic number, because the mean of its divisors is an integer number (45233100).

Almost surely, 2^1123120040 is an apocalyptic number.

1123120040 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 1123120040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1447459200).

1123120040 is an abundant number, since it is smaller than the sum of its proper divisors (1771798360).

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

1123120040 is a wasteful number, since it uses less digits than its factorization.

1123120040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9594 (or 9590 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1123120040 is about 33512.9831557861. The cubic root of 1123120040 is about 1039.4622589865.

Adding to 1123120040 its reverse (400213211), we get a palindrome (1523333251).

The spelling of 1123120040 in words is "one billion, one hundred twenty-three million, one hundred twenty thousand, forty".