1138129 has 4 divisors (see below), whose sum is σ = 1155184. Its totient is φ = 1121076.

The previous prime is 1138127. The next prime is 1138141. The reversal of 1138129 is 9218311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9218311 = 1193 ⋅7727.

It is a cyclic number.

It is not a de Polignac number, because 1138129 - 2¹ = 1138127 is a prime.

It is a Duffinian number.

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

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 3 ways as a sum of consecutive naturals, for example, 8427 + ... + 8560.

It is an arithmetic number, because the mean of its divisors is an integer number (288796).

2^1138129 is an apocalyptic number.

It is an amenable number.

1138129 is a deficient number, since it is larger than the sum of its proper divisors (17055).

1138129 is an equidigital number, since it uses as much as digits as its factorization.

1138129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17054.

The product of its digits is 432, while the sum is 25.

The square root of 1138129 is about 1066.8312893799. The cubic root of 1138129 is about 104.4072114238.

The spelling of 1138129 in words is "one million, one hundred thirty-eight thousand, one hundred twenty-nine".