147841 has 4 divisors (see below), whose sum is σ = 148912. Its totient is φ = 146772.

The previous prime is 147827. The next prime is 147853. The reversal of 147841 is 148741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147841 is a prime.

It is a super-2 number, since 2×147841² = 43713922562, which contains 22 as substring.

It is the 385-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147811) by changing a digit.

It is a nontrivial repunit in base 384.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291 + ... + 616.

It is an arithmetic number, because the mean of its divisors is an integer number (37228).

2¹⁴⁷⁸⁴¹ is an apocalyptic number.

It is an amenable number.

147841 is a deficient number, since it is larger than the sum of its proper divisors (1071).

147841 is an equidigital number, since it uses as much as digits as its factorization.

147841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070.

The product of its digits is 896, while the sum is 25.

The square root of 147841 is about 384.5009752914. The cubic root of 147841 is about 52.8767755516.

Subtracting 147841 from its reverse (148741), we obtain a square (900 = 30²).

The spelling of 147841 in words is "one hundred forty-seven thousand, eight hundred forty-one".