1123540145 has 16 divisors (see below), whose sum is σ = 1659383040. Its totient is φ = 711163584.

The previous prime is 1123540109. The next prime is 1123540169. The reversal of 1123540145 is 5410453211.

It is a cyclic number.

It is not a de Polignac number, because 1123540145 - 2²⁶ = 1056431281 is a prime.

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, 1234205 + ... + 1235114.

It is an arithmetic number, because the mean of its divisors is an integer number (103711440).

Almost surely, 2^1123540145 is an apocalyptic number.

It is an amenable number.

1123540145 is a deficient number, since it is larger than the sum of its proper divisors (535842895).

1123540145 is a wasteful number, since it uses less digits than its factorization.

1123540145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469344.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1123540145 is about 33519.2503645293. The cubic root of 1123540145 is about 1039.5918470509.

Adding to 1123540145 its reverse (5410453211), we get a palindrome (6533993356).

The spelling of 1123540145 in words is "one billion, one hundred twenty-three million, five hundred forty thousand, one hundred forty-five".