1155129 has 8 divisors (see below), whose sum is σ = 1607232. Its totient is φ = 736560.

The previous prime is 1155127. The next prime is 1155149. The reversal of 1155129 is 9215511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1155129 - 2¹ = 1155127 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1155099 and 1155108.

It is not an unprimeable number, because it can be changed into a prime (1155127) 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, 8302 + ... + 8439.

It is an arithmetic number, because the mean of its divisors is an integer number (200904).

2^1155129 is an apocalyptic number.

It is an amenable number.

1155129 is a deficient number, since it is larger than the sum of its proper divisors (452103).

1155129 is a wasteful number, since it uses less digits than its factorization.

1155129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16767.

The product of its digits is 450, while the sum is 24.

The square root of 1155129 is about 1074.7692775661. The cubic root of 1155129 is about 104.9244808448.

The spelling of 1155129 in words is "one million, one hundred fifty-five thousand, one hundred twenty-nine".