124351121444421 has 4 divisors (see below), whose sum is σ = 165801495259232. Its totient is φ = 82900747629612.

The previous prime is 124351121444269. The next prime is 124351121444461. The reversal of 124351121444421 is 124444121153421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-124351121444421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124351121444421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124351121444461) 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, 20725186907401 + ... + 20725186907406.

It is an arithmetic number, because the mean of its divisors is an integer number (41450373814808).

Almost surely, 2^{124351121444421} is an apocalyptic number.

It is an amenable number.

124351121444421 is a deficient number, since it is larger than the sum of its proper divisors (41450373814811).

124351121444421 is an equidigital number, since it uses as much as digits as its factorization.

124351121444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41450373814810.

The product of its digits is 122880, while the sum is 39.

Adding to 124351121444421 its reverse (124444121153421), we get a palindrome (248795242597842).

The spelling of 124351121444421 in words is "one hundred twenty-four trillion, three hundred fifty-one billion, one hundred twenty-one million, four hundred forty-four thousand, four hundred twenty-one".