1158047 has 4 divisors (see below), whose sum is σ = 1263336. Its totient is φ = 1052760.

The previous prime is 1158037. The next prime is 1158071. The reversal of 1158047 is 7408511.

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

It is a cyclic number.

It is not a de Polignac number, because 1158047 - 2⁸ = 1157791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52628 + ... + 52649.

It is an arithmetic number, because the mean of its divisors is an integer number (315834).

2^1158047 is an apocalyptic number.

1158047 is a deficient number, since it is larger than the sum of its proper divisors (105289).

1158047 is a wasteful number, since it uses less digits than its factorization.

1158047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105288.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 1158047 is about 1076.1259219998. The cubic root of 1158047 is about 105.0127573313.

The spelling of 1158047 in words is "one million, one hundred fifty-eight thousand, forty-seven".