124608821 has 4 divisors (see below), whose sum is σ = 131167200. Its totient is φ = 118050444.

The previous prime is 124608751. The next prime is 124608857. The reversal of 124608821 is 128806421.

It is a happy number.

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: 128806421 = 239 ⋅538939.

It is a cyclic number.

It is not a de Polignac number, because 124608821 - 2¹⁰ = 124607797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124608221) 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, 3279161 + ... + 3279198.

It is an arithmetic number, because the mean of its divisors is an integer number (32791800).

Almost surely, 2^124608821 is an apocalyptic number.

It is an amenable number.

124608821 is a deficient number, since it is larger than the sum of its proper divisors (6558379).

124608821 is an equidigital number, since it uses as much as digits as its factorization.

124608821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6558378.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 124608821 is about 11162.8321227187. The cubic root of 124608821 is about 499.4778829774.

The spelling of 124608821 in words is "one hundred twenty-four million, six hundred eight thousand, eight hundred twenty-one".