1155141 has 20 divisors (see below), whose sum is σ = 1860012. Its totient is φ = 710208.

The previous prime is 1155127. The next prime is 1155149. The reversal of 1155141 is 1415511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 245025 + 910116 = 495^2 + 954^2 .

It is not a de Polignac number, because 1155141 - 2¹⁴ = 1138757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 505 + ... + 1601.

2^1155141 is an apocalyptic number.

It is an amenable number.

1155141 is a deficient number, since it is larger than the sum of its proper divisors (704871).

1155141 is a wasteful number, since it uses less digits than its factorization.

1155141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1113 counting only the distinct ones).

The product of its digits is 100, while the sum is 18.

The square root of 1155141 is about 1074.7748601451. The cubic root of 1155141 is about 104.9248441778.

It can be divided in two parts, 1155 and 141, that added together give a 4-th power (1296 = 6⁴).

The spelling of 1155141 in words is "one million, one hundred fifty-five thousand, one hundred forty-one".