123543158 has 4 divisors (see below), whose sum is σ = 185314740. Its totient is φ = 61771578.

The previous prime is 123543139. The next prime is 123543169. The reversal of 123543158 is 851345321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 851345321 = 37 ⋅23009333.

It is a super-2 number, since 2×123543158² = 30525823777225928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30885788 + ... + 30885791.

It is an arithmetic number, because the mean of its divisors is an integer number (46328685).

Almost surely, 2^123543158 is an apocalyptic number.

123543158 is a deficient number, since it is larger than the sum of its proper divisors (61771582).

123543158 is an equidigital number, since it uses as much as digits as its factorization.

123543158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61771581.

The product of its digits is 14400, while the sum is 32.

The square root of 123543158 is about 11114.9969860545. The cubic root of 123543158 is about 498.0499484855.

Adding to 123543158 its reverse (851345321), we get a palindrome (974888479).

The spelling of 123543158 in words is "one hundred twenty-three million, five hundred forty-three thousand, one hundred fifty-eight".