1103123142 has 48 divisors (see below), whose sum is σ = 2618403840. Its totient is φ = 332866800.

The previous prime is 1103123129. The next prime is 1103123159. The reversal of 1103123142 is 2413213011.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 35667 + ... + 58977.

It is an arithmetic number, because the mean of its divisors is an integer number (54550080).

Almost surely, 2^1103123142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103123142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309201920).

1103123142 is an abundant number, since it is smaller than the sum of its proper divisors (1515280698).

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

1103123142 is a wasteful number, since it uses less digits than its factorization.

1103123142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23569 (or 23566 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1103123142 is about 33213.2976682533. The cubic root of 1103123142 is about 1033.2561490967.

Adding to 1103123142 its reverse (2413213011), we get a palindrome (3516336153).

The spelling of 1103123142 in words is "one billion, one hundred three million, one hundred twenty-three thousand, one hundred forty-two".