1123054540 has 12 divisors (see below), whose sum is σ = 2358414576. Its totient is φ = 449221808.

The previous prime is 1123054529. The next prime is 1123054553. The reversal of 1123054540 is 454503211.

It is a happy number.

It is a super-2 number, since 2×1123054540² = 2522502999629223200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28076344 + ... + 28076383.

It is an arithmetic number, because the mean of its divisors is an integer number (196534548).

Almost surely, 2^1123054540 is an apocalyptic number.

1123054540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123054540 is an abundant number, since it is smaller than the sum of its proper divisors (1235360036).

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

1123054540 is a wasteful number, since it uses less digits than its factorization.

1123054540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56152736 (or 56152734 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1123054540 is about 33512.0059083308. The cubic root of 1123054540 is about 1039.4420515587.

Adding to 1123054540 its reverse (454503211), we get a palindrome (1577557751).

The spelling of 1123054540 in words is "one billion, one hundred twenty-three million, fifty-four thousand, five hundred forty".