1138123 has 6 divisors (see below), whose sum is σ = 1323996. Its totient is φ = 975492.

The previous prime is 1138117. The next prime is 1138127. The reversal of 1138123 is 3218311.

It is not a de Polignac number, because 1138123 - 2⁵ = 1138091 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1138123.

It is not an unprimeable number, because it can be changed into a prime (1138127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11565 + ... + 11662.

It is an arithmetic number, because the mean of its divisors is an integer number (220666).

2^1138123 is an apocalyptic number.

1138123 is a deficient number, since it is larger than the sum of its proper divisors (185873).

1138123 is an equidigital number, since it uses as much as digits as its factorization.

1138123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23241 (or 23234 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1138123 is about 1066.8284773102. The cubic root of 1138123 is about 104.4070279518.

The spelling of 1138123 in words is "one million, one hundred thirty-eight thousand, one hundred twenty-three".