122724039 has 4 divisors (see below), whose sum is σ = 163632056. Its totient is φ = 81816024.

The previous prime is 122724031. The next prime is 122724047. The reversal of 122724039 is 930427221.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (122724031) and next prime (122724047).

It is not a de Polignac number, because 122724039 - 2³ = 122724031 is a prime.

It is a super-2 number, since 2×122724039² = 30122379496947042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122723997 and 122724015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122724031) 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, 20454004 + ... + 20454009.

It is an arithmetic number, because the mean of its divisors is an integer number (40908014).

Almost surely, 2^122724039 is an apocalyptic number.

122724039 is a deficient number, since it is larger than the sum of its proper divisors (40908017).

122724039 is an equidigital number, since it uses as much as digits as its factorization.

122724039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40908016.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 122724039 is about 11078.0882375977. The cubic root of 122724039 is about 496.9467789661.

The spelling of 122724039 in words is "one hundred twenty-two million, seven hundred twenty-four thousand, thirty-nine".