158840140 has 24 divisors (see below), whose sum is σ = 334649952. Its totient is φ = 63329280.

The previous prime is 158840137. The next prime is 158840159. The reversal of 158840140 is 41048851.

158840140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6549 + ... + 18988.

It is an arithmetic number, because the mean of its divisors is an integer number (13943748).

Almost surely, 2^158840140 is an apocalyptic number.

158840140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158840140 is an abundant number, since it is smaller than the sum of its proper divisors (175809812).

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

158840140 is a wasteful number, since it uses less digits than its factorization.

158840140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25857 (or 25855 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 158840140 is about 12603.1797575056. The cubic root of 158840140 is about 541.5685304922.

Adding to 158840140 its reverse (41048851), we get a palindrome (199888991).

The spelling of 158840140 in words is "one hundred fifty-eight million, eight hundred forty thousand, one hundred forty".