158255242 has 4 divisors (see below), whose sum is σ = 237382866. Its totient is φ = 79127620.

The previous prime is 158255239. The next prime is 158255269. The reversal of 158255242 is 242552851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242552851 = 181 ⋅1340071.

It can be written as a sum of positive squares in only one way, i.e., 133841761 + 24413481 = 11569^2 + 4941^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158255198 and 158255207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39563809 + ... + 39563812.

Almost surely, 2^158255242 is an apocalyptic number.

158255242 is a deficient number, since it is larger than the sum of its proper divisors (79127624).

158255242 is an equidigital number, since it uses as much as digits as its factorization.

158255242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79127623.

The product of its digits is 32000, while the sum is 34.

The square root of 158255242 is about 12579.9539744786. The cubic root of 158255242 is about 540.9029725440.

The spelling of 158255242 in words is "one hundred fifty-eight million, two hundred fifty-five thousand, two hundred forty-two".