124861 has 4 divisors (see below), whose sum is σ = 136224. Its totient is φ = 113500.

The previous prime is 124853. The next prime is 124897. The reversal of 124861 is 168421.

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.

It is a cyclic number.

It is not a de Polignac number, because 124861 - 2³ = 124853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5665 + ... + 5686.

It is an arithmetic number, because the mean of its divisors is an integer number (34056).

2¹²⁴⁸⁶¹ is an apocalyptic number.

124861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124861 is a deficient number, since it is larger than the sum of its proper divisors (11363).

124861 is a wasteful number, since it uses less digits than its factorization.

124861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11362.

The product of its digits is 384, while the sum is 22.

The square root of 124861 is about 353.3567602297. The cubic root of 124861 is about 49.9814597927.

The spelling of 124861 in words is "one hundred twenty-four thousand, eight hundred sixty-one".