123132139429 has 6 divisors (see below), whose sum is σ = 133332435186. Its totient is φ = 113660436240.

The previous prime is 123132139409. The next prime is 123132139441. The reversal of 123132139429 is 924931231321.

It can be written as a sum of positive squares in 3 ways, for example, as 1648522404 + 121483617025 = 40602^2 + 348545^2 .

It is not a de Polignac number, because 123132139429 - 2³³ = 114542204837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123132139391 and 123132139400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123132139409) 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 5 ways as a sum of consecutive naturals, for example, 364296102 + ... + 364296439.

It is an arithmetic number, because the mean of its divisors is an integer number (22222072531).

Almost surely, 2^123132139429 is an apocalyptic number.

It is an amenable number.

123132139429 is a deficient number, since it is larger than the sum of its proper divisors (10200295757).

123132139429 is an equidigital number, since it uses as much as digits as its factorization.

123132139429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728592567 (or 728592554 counting only the distinct ones).

The product of its digits is 69984, while the sum is 40.

The spelling of 123132139429 in words is "one hundred twenty-three billion, one hundred thirty-two million, one hundred thirty-nine thousand, four hundred twenty-nine".