123290220239 has 4 divisors (see below), whose sum is σ = 124075508424. Its totient is φ = 122504932056.

The previous prime is 123290220233. The next prime is 123290220241. The reversal of 123290220239 is 932022092321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932022092321 = 1019 ⋅914643859.

It is a cyclic number.

It is not a de Polignac number, because 123290220239 - 2¹² = 123290216143 is a prime.

It is a super-2 number, since 2×123290220239² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123290220199 and 123290220208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123290220233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392643857 + ... + 392644170.

It is an arithmetic number, because the mean of its divisors is an integer number (31018877106).

Almost surely, 2^123290220239 is an apocalyptic number.

123290220239 is a deficient number, since it is larger than the sum of its proper divisors (785288185).

123290220239 is an equidigital number, since it uses as much as digits as its factorization.

123290220239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785288184.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 123290220239 in words is "one hundred twenty-three billion, two hundred ninety million, two hundred twenty thousand, two hundred thirty-nine".