124205159993 has 4 divisors (see below), whose sum is σ = 124500184548. Its totient is φ = 123910135440.

The previous prime is 124205159989. The next prime is 124205160019. The reversal of 124205159993 is 399951502421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399951502421 = 11113 ⋅35989517.

It can be written as a sum of positive squares in 2 ways, for example, as 619163689 + 123585996304 = 24883^2 + 351548^2 .

It is a cyclic number.

It is not a de Polignac number, because 124205159993 - 2² = 124205159989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124205159933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147511646 + ... + 147512487.

It is an arithmetic number, because the mean of its divisors is an integer number (31125046137).

Almost surely, 2^124205159993 is an apocalyptic number.

It is an amenable number.

124205159993 is a deficient number, since it is larger than the sum of its proper divisors (295024555).

124205159993 is an equidigital number, since it uses as much as digits as its factorization.

124205159993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295024554.

The product of its (nonzero) digits is 874800, while the sum is 50.

The spelling of 124205159993 in words is "one hundred twenty-four billion, two hundred five million, one hundred fifty-nine thousand, nine hundred ninety-three".