123841 has 4 divisors (see below), whose sum is σ = 126000. Its totient is φ = 121684.

The previous prime is 123833. The next prime is 123853. The reversal of 123841 is 148321.

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 an emirpimes, since its reverse is a distinct semiprime: 148321 = 83 ⋅1787.

It is a cyclic number.

It is not a de Polignac number, because 123841 - 2³ = 123833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991 + ... + 1108.

It is an arithmetic number, because the mean of its divisors is an integer number (31500).

2¹²³⁸⁴¹ is an apocalyptic number.

It is an amenable number.

123841 is a deficient number, since it is larger than the sum of its proper divisors (2159).

123841 is an equidigital number, since it uses as much as digits as its factorization.

123841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158.

The product of its digits is 192, while the sum is 19.

The square root of 123841 is about 351.9104999854. The cubic root of 123841 is about 49.8449865801.

The spelling of 123841 in words is "one hundred twenty-three thousand, eight hundred forty-one".