124084021 has 4 divisors (see below), whose sum is σ = 126187200. Its totient is φ = 121980844.

The previous prime is 124084019. The next prime is 124084031. The reversal of 124084021 is 120480421.

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 124084021 - 2¹ = 124084019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124083983 and 124084001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124084031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051501 + ... + 1051618.

It is an arithmetic number, because the mean of its divisors is an integer number (31546800).

Almost surely, 2^124084021 is an apocalyptic number.

It is an amenable number.

124084021 is a deficient number, since it is larger than the sum of its proper divisors (2103179).

124084021 is an equidigital number, since it uses as much as digits as its factorization.

124084021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103178.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 124084021 is about 11139.3007410699. The cubic root of 124084021 is about 498.7756992890.

The spelling of 124084021 in words is "one hundred twenty-four million, eighty-four thousand, twenty-one".