124319999987 has 2 divisors, whose sum is σ = 124319999988. Its totient is φ = 124319999986.

The previous prime is 124319999977. The next prime is 124320000019. The reversal of 124319999987 is 789999913421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124319999987 - 2¹⁴ = 124319983603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124319999987.

It is not a weakly prime, because it can be changed into another prime (124319999917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62159999993 + 62159999994.

It is an arithmetic number, because the mean of its divisors is an integer number (62159999994).

Almost surely, 2^124319999987 is an apocalyptic number.

124319999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

124319999987 is an equidigital number, since it uses as much as digits as its factorization.

124319999987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79361856, while the sum is 71.

The spelling of 124319999987 in words is "one hundred twenty-four billion, three hundred nineteen million, nine hundred ninety-nine thousand, nine hundred eighty-seven".