158340040 has 32 divisors (see below), whose sum is σ = 377223480. Its totient is φ = 59610112.

The previous prime is 158340019. The next prime is 158340041. The reversal of 158340040 is 40043851.

158340040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 158206084 + 133956 = 12578^2 + 366^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158339987 and 158340014.

It is not an unprimeable number, because it can be changed into a prime (158340041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115747 + ... + 117106.

Almost surely, 2^158340040 is an apocalyptic number.

158340040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158340040 is an abundant number, since it is smaller than the sum of its proper divisors (218883440).

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

158340040 is a wasteful number, since it uses less digits than its factorization.

158340040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232881 (or 232877 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 158340040 is about 12583.3238852062. The cubic root of 158340040 is about 540.9995660801. Note that the first 3 decimals are identical.

Adding to 158340040 its reverse (40043851), we get a palindrome (198383891).

The spelling of 158340040 in words is "one hundred fifty-eight million, three hundred forty thousand, forty".