12320158 has 4 divisors (see below), whose sum is σ = 18480240. Its totient is φ = 6160078.

The previous prime is 12320141. The next prime is 12320159. The reversal of 12320158 is 85102321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85102321 = 157 ⋅542053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3080038 + ... + 3080041.

It is an arithmetic number, because the mean of its divisors is an integer number (4620060).

Almost surely, 2^12320158 is an apocalyptic number.

12320158 is a deficient number, since it is larger than the sum of its proper divisors (6160082).

12320158 is an equidigital number, since it uses as much as digits as its factorization.

12320158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6160081.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12320158 is about 3510.0082620985. The cubic root of 12320158 is about 230.9610573834.

Adding to 12320158 its reverse (85102321), we get a palindrome (97422479).

The spelling of 12320158 in words is "twelve million, three hundred twenty thousand, one hundred fifty-eight".