124198894997 has 2 divisors, whose sum is σ = 124198894998. Its totient is φ = 124198894996.

The previous prime is 124198894961. The next prime is 124198895021. The reversal of 124198894997 is 799498891421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84244482001 + 39954412996 = 290249^2 + 199886^2 .

It is an emirp because it is prime and its reverse (799498891421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124198894997 - 2⁸ = 124198894741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124198894997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124198834997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62099447498 + 62099447499.

It is an arithmetic number, because the mean of its divisors is an integer number (62099447499).

Almost surely, 2^124198894997 is an apocalyptic number.

It is an amenable number.

124198894997 is a deficient number, since it is larger than the sum of its proper divisors (1).

124198894997 is an equidigital number, since it uses as much as digits as its factorization.

124198894997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94058496, while the sum is 71.

The spelling of 124198894997 in words is "one hundred twenty-four billion, one hundred ninety-eight million, eight hundred ninety-four thousand, nine hundred ninety-seven".