1109240128 has 28 divisors (see below), whose sum is σ = 2204485812. Its totient is φ = 553779200.

The previous prime is 1109240107. The next prime is 1109240149. The reversal of 1109240128 is 8210429011.

It is an interprime number because it is at equal distance from previous prime (1109240107) and next prime (1109240149).

It can be written as a sum of positive squares in 2 ways, for example, as 1107025984 + 2214144 = 33272^2 + 1488^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1109240096 and 1109240105.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 30528 + ... + 56128.

Almost surely, 2^1109240128 is an apocalyptic number.

It is an amenable number.

1109240128 is a deficient number, since it is larger than the sum of its proper divisors (1095245684).

1109240128 is an equidigital number, since it uses as much as digits as its factorization.

1109240128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26290 (or 26280 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1109240128 is about 33305.2567622590. The cubic root of 1109240128 is about 1035.1624840783.

Adding to 1109240128 its reverse (8210429011), we get a palindrome (9319669139).

The spelling of 1109240128 in words is "one billion, one hundred nine million, two hundred forty thousand, one hundred twenty-eight".