1115129 has 6 divisors (see below), whose sum is σ = 1177290. Its totient is φ = 1056096.

The previous prime is 1115117. The next prime is 1115131. The reversal of 1115129 is 9215111.

It can be written as a sum of positive squares in only one way, i.e., 1092025 + 23104 = 1045^2 + 152^2 .

It is not a de Polignac number, because 1115129 - 2⁴ = 1115113 is a prime.

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 1115129.

It is not an unprimeable number, because it can be changed into a prime (1115189) 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, 1184 + ... + 1905.

It is an arithmetic number, because the mean of its divisors is an integer number (196215).

2^1115129 is an apocalyptic number.

1115129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1115129 is a deficient number, since it is larger than the sum of its proper divisors (62161).

1115129 is an equidigital number, since it uses as much as digits as its factorization.

1115129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127 (or 3108 counting only the distinct ones).

The product of its digits is 90, while the sum is 20.

The square root of 1115129 is about 1055.9966856009. The cubic root of 1115129 is about 103.6991118321.

The spelling of 1115129 in words is "one million, one hundred fifteen thousand, one hundred twenty-nine".