1129215 has 16 divisors (see below), whose sum is σ = 1830528. Its totient is φ = 594336.

The previous prime is 1129213. The next prime is 1129217. The reversal of 1129215 is 5129211.

It is an interprime number because it is at equal distance from previous prime (1129213) and next prime (1129217).

It is not a de Polignac number, because 1129215 - 2¹ = 1129213 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1129191 and 1129200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 792 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (114408).

2^1129215 is an apocalyptic number.

1129215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1129215 is a deficient number, since it is larger than the sum of its proper divisors (701313).

1129215 is an equidigital number, since it uses as much as digits as its factorization.

1129215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its digits is 180, while the sum is 21.

The square root of 1129215 is about 1062.6452841847. The cubic root of 1129215 is about 104.1339189504.

The spelling of 1129215 in words is "one million, one hundred twenty-nine thousand, two hundred fifteen".