123424333987 has 2 divisors, whose sum is σ = 123424333988. Its totient is φ = 123424333986.

The previous prime is 123424333979. The next prime is 123424334017. The reversal of 123424333987 is 789333424321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123424333987 - 2³ = 123424333979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123424333987.

It is not a weakly prime, because it can be changed into another prime (123424333387) 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 as a sum of consecutive naturals, namely, 61712166993 + 61712166994.

It is an arithmetic number, because the mean of its divisors is an integer number (61712166994).

Almost surely, 2^123424333987 is an apocalyptic number.

123424333987 is a deficient number, since it is larger than the sum of its proper divisors (1).

123424333987 is an equidigital number, since it uses as much as digits as its factorization.

123424333987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 49.

The spelling of 123424333987 in words is "one hundred twenty-three billion, four hundred twenty-four million, three hundred thirty-three thousand, nine hundred eighty-seven".