159740040 has 64 divisors (see below), whose sum is σ = 480168000. Its totient is φ = 42513152.

The previous prime is 159740003. The next prime is 159740071. The reversal of 159740040 is 40047951.

It is a happy number.

It is a super-4 number, since 4×159740040⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80986 + ... + 82934.

It is an arithmetic number, because the mean of its divisors is an integer number (7502625).

Almost surely, 2^159740040 is an apocalyptic number.

159740040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159740040 is an abundant number, since it is smaller than the sum of its proper divisors (320427960).

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

159740040 is a wasteful number, since it uses less digits than its factorization.

159740040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646 (or 2642 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 159740040 is about 12638.8306421124. The cubic root of 159740040 is about 542.5893472724.

Adding to 159740040 its reverse (40047951), we get a palindrome (199787991).

The spelling of 159740040 in words is "one hundred fifty-nine million, seven hundred forty thousand, forty".