1178543 has 4 divisors (see below), whose sum is σ = 1229808. Its totient is φ = 1127280.

The previous prime is 1178537. The next prime is 1178549. The reversal of 1178543 is 3458711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3458711 = 883 ⋅3917.

It is an interprime number because it is at equal distance from previous prime (1178537) and next prime (1178549).

It is a cyclic number.

It is not a de Polignac number, because 1178543 - 2⁶ = 1178479 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 (1178549) 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, 25598 + ... + 25643.

It is an arithmetic number, because the mean of its divisors is an integer number (307452).

2^1178543 is an apocalyptic number.

1178543 is a deficient number, since it is larger than the sum of its proper divisors (51265).

1178543 is an equidigital number, since it uses as much as digits as its factorization.

1178543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51264.

The product of its digits is 3360, while the sum is 29.

The square root of 1178543 is about 1085.6072033659. The cubic root of 1178543 is about 105.6286698537.

The spelling of 1178543 in words is "one million, one hundred seventy-eight thousand, five hundred forty-three".