147940 has 24 divisors (see below), whose sum is σ = 335160. Its totient is φ = 54528.

The previous prime is 147937. The next prime is 147949. The reversal of 147940 is 49741.

It can be written as a sum of positive squares in 4 ways, for example, as 484 + 147456 = 22^2 + 384^2 .

It is not an unprimeable number, because it can be changed into a prime (147949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25 + ... + 544.

It is an arithmetic number, because the mean of its divisors is an integer number (13965).

2¹⁴⁷⁹⁴⁰ is an apocalyptic number.

147940 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 147940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167580).

147940 is an abundant number, since it is smaller than the sum of its proper divisors (187220).

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

147940 is a wasteful number, since it uses less digits than its factorization.

147940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 147940 is about 384.6296920416. The cubic root of 147940 is about 52.8885756899. Note that the first 3 decimals are identical.

The spelling of 147940 in words is "one hundred forty-seven thousand, nine hundred forty".