1123040145 has 16 divisors (see below), whose sum is σ = 1902562560. Its totient is φ = 563721984.

The previous prime is 1123040123. The next prime is 1123040203. The reversal of 1123040145 is 5410403211.

It is not a de Polignac number, because 1123040145 - 2⁸ = 1123039889 is a prime.

It is a super-2 number, since 2×1123040145² = 2522438334563242050, which contains 22 as substring.

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, 2201785 + ... + 2202294.

It is an arithmetic number, because the mean of its divisors is an integer number (118910160).

Almost surely, 2^1123040145 is an apocalyptic number.

1123040145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123040145 is a deficient number, since it is larger than the sum of its proper divisors (779522415).

1123040145 is a wasteful number, since it uses less digits than its factorization.

1123040145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404104.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1123040145 is about 33511.7911338681. The cubic root of 1123040145 is about 1039.4376104469.

Adding to 1123040145 its reverse (5410403211), we get a palindrome (6533443356).

The spelling of 1123040145 in words is "one billion, one hundred twenty-three million, forty thousand, one hundred forty-five".