1158423 has 8 divisors (see below), whose sum is σ = 1765248. Its totient is φ = 661944.

The previous prime is 1158419. The next prime is 1158427. The reversal of 1158423 is 3248511.

It is an interprime number because it is at equal distance from previous prime (1158419) and next prime (1158427).

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

It is not a de Polignac number, because 1158423 - 2² = 1158419 is a prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1158393 and 1158402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27561 + ... + 27602.

It is an arithmetic number, because the mean of its divisors is an integer number (220656).

2^1158423 is an apocalyptic number.

1158423 is a deficient number, since it is larger than the sum of its proper divisors (606825).

1158423 is an equidigital number, since it uses as much as digits as its factorization.

1158423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55173.

The product of its digits is 960, while the sum is 24.

The square root of 1158423 is about 1076.3006085662. The cubic root of 1158423 is about 105.0241214423.

The spelling of 1158423 in words is "one million, one hundred fifty-eight thousand, four hundred twenty-three".