1123254138 has 16 divisors (see below), whose sum is σ = 2246865696. Its totient is φ = 374358480.

The previous prime is 1123254133. The next prime is 1123254149. The reversal of 1123254138 is 8314523211.

It is not an unprimeable number, because it can be changed into a prime (1123254131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43693 + ... + 64463.

It is an arithmetic number, because the mean of its divisors is an integer number (140429106).

Almost surely, 2^1123254138 is an apocalyptic number.

1123254138 is an abundant number, since it is smaller than the sum of its proper divisors (1123611558).

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

1123254138 is a wasteful number, since it uses less digits than its factorization.

1123254138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29789.

The product of its digits is 5760, while the sum is 30.

The square root of 1123254138 is about 33514.9837833767. The cubic root of 1123254138 is about 1039.5036271567.

Adding to 1123254138 its reverse (8314523211), we get a palindrome (9437777349).

The spelling of 1123254138 in words is "one billion, one hundred twenty-three million, two hundred fifty-four thousand, one hundred thirty-eight".