123429344879 has 2 divisors, whose sum is σ = 123429344880. Its totient is φ = 123429344878.

The previous prime is 123429344869. The next prime is 123429344891. The reversal of 123429344879 is 978443924321.

It is a weak prime.

It is an emirp because it is prime and its reverse (978443924321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123429344879 - 2¹⁶ = 123429279343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123429344869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61714672439 + 61714672440.

It is an arithmetic number, because the mean of its divisors is an integer number (61714672440).

Almost surely, 2^123429344879 is an apocalyptic number.

123429344879 is a deficient number, since it is larger than the sum of its proper divisors (1).

123429344879 is an equidigital number, since it uses as much as digits as its factorization.

123429344879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 56.

The spelling of 123429344879 in words is "one hundred twenty-three billion, four hundred twenty-nine million, three hundred forty-four thousand, eight hundred seventy-nine".