158442133 has 4 divisors (see below), whose sum is σ = 158487840. Its totient is φ = 158396428.

The previous prime is 158442127. The next prime is 158442139. The reversal of 158442133 is 331244851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (158442127) and next prime (158442139).

It is a cyclic number.

It is not a de Polignac number, because 158442133 - 2¹³ = 158433941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158442095 and 158442104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158442139) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 17185 + ... + 24742.

It is an arithmetic number, because the mean of its divisors is an integer number (39621960).

Almost surely, 2^158442133 is an apocalyptic number.

It is an amenable number.

158442133 is a deficient number, since it is larger than the sum of its proper divisors (45707).

158442133 is an equidigital number, since it uses as much as digits as its factorization.

158442133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45706.

The product of its digits is 11520, while the sum is 31.

The square root of 158442133 is about 12587.3799100528. The cubic root of 158442133 is about 541.1158146345.

Adding to 158442133 its reverse (331244851), we get a palindrome (489686984).

The spelling of 158442133 in words is "one hundred fifty-eight million, four hundred forty-two thousand, one hundred thirty-three".