124204101402421 has 2 divisors, whose sum is σ = 124204101402422. Its totient is φ = 124204101402420.

The previous prime is 124204101402413. The next prime is 124204101402443.

124204101402421 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92220393891025 + 31983707511396 = 9603145^2 + 5655414^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 124204101402421 - 2³ = 124204101402413 is a prime.

It is a super-2 number, since 2×124204101402421² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 124204101402421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124204101402461) 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 as a sum of consecutive naturals, namely, 62102050701210 + 62102050701211.

It is an arithmetic number, because the mean of its divisors is an integer number (62102050701211).

Almost surely, 2^{124204101402421} is an apocalyptic number.

It is an amenable number.

124204101402421 is a deficient number, since it is larger than the sum of its proper divisors (1).

124204101402421 is an equidigital number, since it uses as much as digits as its factorization.

124204101402421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 28.

It can be divided in two parts, 12420410 and 1402421, that added together give a palindrome (13822831).

The spelling of 124204101402421 in words is "one hundred twenty-four trillion, two hundred four billion, one hundred one million, four hundred two thousand, four hundred twenty-one".