1123302540 has 72 divisors (see below), whose sum is σ = 3341196432. Its totient is φ = 281922560.

The previous prime is 1123302529. The next prime is 1123302541. The reversal of 1123302540 is 452033211.

It is not an unprimeable number, because it can be changed into a prime (1123302541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15051 + ... + 49730.

It is an arithmetic number, because the mean of its divisors is an integer number (46405506).

Almost surely, 2^1123302540 is an apocalyptic number.

1123302540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123302540 is an abundant number, since it is smaller than the sum of its proper divisors (2217893892).

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

1123302540 is a wasteful number, since it uses less digits than its factorization.

1123302540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64827 (or 64808 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1123302540 is about 33515.7058705318. The cubic root of 1123302540 is about 1039.5185579814.

Adding to 1123302540 its reverse (452033211), we get a palindrome (1575335751).

The spelling of 1123302540 in words is "one billion, one hundred twenty-three million, three hundred two thousand, five hundred forty".