158030042 has 8 divisors (see below), whose sum is σ = 237108756. Its totient is φ = 78993792.

The previous prime is 158030023. The next prime is 158030057. The reversal of 158030042 is 240030851.

It is a Cunningham number, because it is equal to 12571²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 158030041 + 1 = 12571^2 + 1^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418 + ... + 17834.

Almost surely, 2^158030042 is an apocalyptic number.

158030042 is a deficient number, since it is larger than the sum of its proper divisors (79078714).

158030042 is a wasteful number, since it uses less digits than its factorization.

158030042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21232.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 158030042 is about 12571.0000397741. Note that the first 4 decimals coincide. The cubic root of 158030042 is about 540.6462792564.

Adding to 158030042 its reverse (240030851), we get a palindrome (398060893).

The spelling of 158030042 in words is "one hundred fifty-eight million, thirty thousand, forty-two".