1128135 has 8 divisors (see below), whose sum is σ = 1805040. Its totient is φ = 601664.

The previous prime is 1128109. The next prime is 1128143. The reversal of 1128135 is 5318211.

1128135 = 473² + 474² + ... + 477².

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

It is a cyclic number.

It is not a de Polignac number, because 1128135 - 2¹⁰ = 1127111 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37590 + ... + 37619.

It is an arithmetic number, because the mean of its divisors is an integer number (225630).

2^1128135 is an apocalyptic number.

1128135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1128135 is a deficient number, since it is larger than the sum of its proper divisors (676905).

1128135 is an equidigital number, since it uses as much as digits as its factorization.

1128135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75217.

The product of its digits is 240, while the sum is 21.

The square root of 1128135 is about 1062.1369968135. The cubic root of 1128135 is about 104.1007098904.

The spelling of 1128135 in words is "one million, one hundred twenty-eight thousand, one hundred thirty-five".