158210042 has 8 divisors (see below), whose sum is σ = 238020276. Its totient is φ = 78869952.

The previous prime is 158210033. The next prime is 158210047. The reversal of 158210042 is 240012851.

It can be written as a sum of positive squares in 2 ways, for example, as 152300281 + 5909761 = 12341^2 + 2431^2 .

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

It is not an unprimeable number, because it can be changed into a prime (158210047) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 116693 + ... + 118040.

Almost surely, 2^158210042 is an apocalyptic number.

158210042 is a deficient number, since it is larger than the sum of its proper divisors (79810234).

158210042 is a wasteful number, since it uses less digits than its factorization.

158210042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235072.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 158210042 is about 12578.1573372255. The cubic root of 158210042 is about 540.8514710538.

Adding to 158210042 its reverse (240012851), we get a palindrome (398222893).

The spelling of 158210042 in words is "one hundred fifty-eight million, two hundred ten thousand, forty-two".