124849 has 4 divisors (see below), whose sum is σ = 131440. Its totient is φ = 118260.

The previous prime is 124847. The next prime is 124853. The reversal of 124849 is 948421.

124849 = T₂₈₇ + T₂₈₈ + T₂₈₉.

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: 948421 = 37 ⋅25633.

It is a cyclic number.

It is not a de Polignac number, because 124849 - 2¹ = 124847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3267 + ... + 3304.

It is an arithmetic number, because the mean of its divisors is an integer number (32860).

2¹²⁴⁸⁴⁹ is an apocalyptic number.

124849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

124849 is the 289-th centered triangular number.

It is an amenable number.

124849 is a deficient number, since it is larger than the sum of its proper divisors (6591).

124849 is an equidigital number, since it uses as much as digits as its factorization.

124849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6590.

The product of its digits is 2304, while the sum is 28.

The square root of 124849 is about 353.3397798154. The cubic root of 124849 is about 49.9798585542.

The spelling of 124849 in words is "one hundred twenty-four thousand, eight hundred forty-nine".