1157943 has 8 divisors (see below), whose sum is σ = 1593856. Its totient is φ = 747000.

The previous prime is 1157929. The next prime is 1157953. The reversal of 1157943 is 3497511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1157943 - 2¹⁸ = 895799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1157943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6133 + ... + 6318.

It is an arithmetic number, because the mean of its divisors is an integer number (199232).

2^1157943 is an apocalyptic number.

1157943 is a deficient number, since it is larger than the sum of its proper divisors (435913).

1157943 is a wasteful number, since it uses less digits than its factorization.

1157943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12485.

The product of its digits is 3780, while the sum is 30.

The square root of 1157943 is about 1076.0775994323. The cubic root of 1157943 is about 105.0096136322.

The spelling of 1157943 in words is "one million, one hundred fifty-seven thousand, nine hundred forty-three".