124221039 has 4 divisors (see below), whose sum is σ = 165628056. Its totient is φ = 82814024.

The previous prime is 124220981. The next prime is 124221049. The reversal of 124221039 is 930122421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930122421 = 3 ⋅310040807.

It is a cyclic number.

It is not a de Polignac number, because 124221039 - 2²⁵ = 90666607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124221049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20703504 + ... + 20703509.

It is an arithmetic number, because the mean of its divisors is an integer number (41407014).

Almost surely, 2^124221039 is an apocalyptic number.

124221039 is a deficient number, since it is larger than the sum of its proper divisors (41407017).

124221039 is an equidigital number, since it uses as much as digits as its factorization.

124221039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41407016.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 124221039 is about 11145.4492507032. The cubic root of 124221039 is about 498.9592203921.

The spelling of 124221039 in words is "one hundred twenty-four million, two hundred twenty-one thousand, thirty-nine".