1171045 has 16 divisors (see below), whose sum is σ = 1555200. Its totient is φ = 841984.

The previous prime is 1171039. The next prime is 1171057. The reversal of 1171045 is 5401711.

It is not a de Polignac number, because 1171045 - 2¹¹ = 1168997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1656 + ... + 2254.

It is an arithmetic number, because the mean of its divisors is an integer number (97200).

2^1171045 is an apocalyptic number.

It is an amenable number.

1171045 is a deficient number, since it is larger than the sum of its proper divisors (384155).

1171045 is a wasteful number, since it uses less digits than its factorization.

1171045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 1171045 is about 1082.1483262474. The cubic root of 1171045 is about 105.4041866489.

Adding to 1171045 its reverse (5401711), we get a palindrome (6572756).

It can be divided in two parts, 117 and 1045, that multiplied together give a triangular number (122265 = T₄₉₄).

The spelling of 1171045 in words is "one million, one hundred seventy-one thousand, forty-five".