1147138 has 4 divisors (see below), whose sum is σ = 1720710. Its totient is φ = 573568.

The previous prime is 1147127. The next prime is 1147141. The reversal of 1147138 is 8317411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8317411 = 61 ⋅136351.

It can be written as a sum of positive squares in only one way, i.e., 1138489 + 8649 = 1067^2 + 93^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286783 + ... + 286786.

2^1147138 is an apocalyptic number.

1147138 is a deficient number, since it is larger than the sum of its proper divisors (573572).

1147138 is an equidigital number, since it uses as much as digits as its factorization.

1147138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573571.

The product of its digits is 672, while the sum is 25.

The square root of 1147138 is about 1071.0452838232. The cubic root of 1147138 is about 104.6819704364.

The spelling of 1147138 in words is "one million, one hundred forty-seven thousand, one hundred thirty-eight".