124242242242421 has 8 divisors (see below), whose sum is σ = 127839766542264. Its totient is φ = 120691137611200.

The previous prime is 124242242242397. The next prime is 124242242242423.

124242242242421 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 85403732719396 + 38838509523025 = 9241414^2 + 6232055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124242242242421 - 2⁴² = 119844195731317 is a prime.

It is a super-2 number, since 2×124242242242421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124242242242423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11604911726 + ... + 11604922431.

It is an arithmetic number, because the mean of its divisors is an integer number (15979970817783).

Almost surely, 2^{124242242242421} is an apocalyptic number.

It is an amenable number.

124242242242421 is a deficient number, since it is larger than the sum of its proper divisors (3597524299843).

124242242242421 is a wasteful number, since it uses less digits than its factorization.

124242242242421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23209834311.

The product of its digits is 262144, while the sum is 38.

The spelling of 124242242242421 in words is "one hundred twenty-four trillion, two hundred forty-two billion, two hundred forty-two million, two hundred forty-two thousand, four hundred twenty-one".