1171138 has 4 divisors (see below), whose sum is σ = 1756710. Its totient is φ = 585568.

The previous prime is 1171133. The next prime is 1171189. The reversal of 1171138 is 8311711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1046529 + 124609 = 1023^2 + 353^2 .

It is not an unprimeable number, because it can be changed into a prime (1171133) by changing a digit.

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 as a sum of consecutive naturals, namely, 292783 + ... + 292786.

2^1171138 is an apocalyptic number.

1171138 is a deficient number, since it is larger than the sum of its proper divisors (585572).

1171138 is an equidigital number, since it uses as much as digits as its factorization.

1171138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585571.

The product of its digits is 168, while the sum is 22.

The square root of 1171138 is about 1082.1912954741. The cubic root of 1171138 is about 105.4069768434.

Adding to 1171138 its reverse (8311711), we get a palindrome (9482849).

The spelling of 1171138 in words is "one million, one hundred seventy-one thousand, one hundred thirty-eight".