159740 has 36 divisors (see below), whose sum is σ = 392616. Its totient is φ = 54432.

The previous prime is 159739. The next prime is 159763. The reversal of 159740 is 47951.

159740 = T₅₅ + T₅₆ + ... + T₁₀₃.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 899 + ... + 1061.

It is an arithmetic number, because the mean of its divisors is an integer number (10906).

2¹⁵⁹⁷⁴⁰ is an apocalyptic number.

159740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196308).

159740 is an abundant number, since it is smaller than the sum of its proper divisors (232876).

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

159740 is a wasteful number, since it uses less digits than its factorization.

159740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 159740 is about 399.6748678614. The cubic root of 159740 is about 54.2589301983.

The spelling of 159740 in words is "one hundred fifty-nine thousand, seven hundred forty".