158311242 has 48 divisors (see below), whose sum is σ = 367328520. Its totient is φ = 49099776.

The previous prime is 158311217. The next prime is 158311297. The reversal of 158311242 is 242113851.

It can be written as a sum of positive squares in 4 ways, for example, as 143496441 + 14814801 = 11979^2 + 3849^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24328 + ... + 30140.

Almost surely, 2^158311242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158311242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183664260).

158311242 is an abundant number, since it is smaller than the sum of its proper divisors (209017278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158311242 is a wasteful number, since it uses less digits than its factorization.

158311242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5927 (or 5924 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 158311242 is about 12582.1795409222. The cubic root of 158311242 is about 540.9667661008.

The spelling of 158311242 in words is "one hundred fifty-eight million, three hundred eleven thousand, two hundred forty-two".