1185242243 has 4 divisors (see below), whose sum is σ = 1187176368. Its totient is φ = 1183308120.

The previous prime is 1185242231. The next prime is 1185242257. The reversal of 1185242243 is 3422425811.

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 1185242243 - 2⁸ = 1185241987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1185242213) 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, 966143 + ... + 967368.

It is an arithmetic number, because the mean of its divisors is an integer number (296794092).

Almost surely, 2^1185242243 is an apocalyptic number.

1185242243 is a deficient number, since it is larger than the sum of its proper divisors (1934125).

1185242243 is an equidigital number, since it uses as much as digits as its factorization.

1185242243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934124.

The product of its digits is 15360, while the sum is 32.

The square root of 1185242243 is about 34427.3473128558. The cubic root of 1185242243 is about 1058.2843502629.

The spelling of 1185242243 in words is "one billion, one hundred eighty-five million, two hundred forty-two thousand, two hundred forty-three".