1118047 has 4 divisors (see below), whose sum is σ = 1277776. Its totient is φ = 958320.

The previous prime is 1118041. The next prime is 1118063. The reversal of 1118047 is 7408111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7408111 = 331 ⋅22381.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1118047 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 (1118041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79854 + ... + 79867.

It is an arithmetic number, because the mean of its divisors is an integer number (319444).

2^1118047 is an apocalyptic number.

1118047 is a deficient number, since it is larger than the sum of its proper divisors (159729).

1118047 is an equidigital number, since it uses as much as digits as its factorization.

1118047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159728.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 1118047 is about 1057.3774160630. The cubic root of 1118047 is about 103.7894841732.

Subtracting 1118047 from its reverse (7408111), we obtain a square (6290064 = 2508²).

The spelling of 1118047 in words is "one million, one hundred eighteen thousand, forty-seven".