1129045 has 4 divisors (see below), whose sum is σ = 1354860. Its totient is φ = 903232.

The previous prime is 1129043. The next prime is 1129103. The reversal of 1129045 is 5409211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5409211 = 193 ⋅28027.

It can be written as a sum of positive squares in 2 ways, for example, as 790321 + 338724 = 889^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129045 - 2¹ = 1129043 is a prime.

It is a super-2 number, since 2×1129045² = 2549485224050, which contains 22 as substring.

It is an Ulam number.

1129045 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112900 + ... + 112909.

It is an arithmetic number, because the mean of its divisors is an integer number (338715).

2^1129045 is an apocalyptic number.

It is an amenable number.

1129045 is a deficient number, since it is larger than the sum of its proper divisors (225815).

1129045 is an equidigital number, since it uses as much as digits as its factorization.

1129045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225814.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1129045 is about 1062.5652921115. The cubic root of 1129045 is about 104.1286930029.

The spelling of 1129045 in words is "one million, one hundred twenty-nine thousand, forty-five".