124420400543213 has 2 divisors, whose sum is σ = 124420400543214. Its totient is φ = 124420400543212.

The previous prime is 124420400543191. The next prime is 124420400543261. The reversal of 124420400543213 is 312345004024421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109069574675044 + 15350825868169 = 10443638^2 + 3918013^2 .

It is a cyclic number.

It is not a de Polignac number, because 124420400543213 - 2¹⁶ = 124420400477677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124420400543513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62210200271606 + 62210200271607.

It is an arithmetic number, because the mean of its divisors is an integer number (62210200271607).

Almost surely, 2^{124420400543213} is an apocalyptic number.

It is an amenable number.

124420400543213 is a deficient number, since it is larger than the sum of its proper divisors (1).

124420400543213 is an equidigital number, since it uses as much as digits as its factorization.

124420400543213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 124420400543213 its reverse (312345004024421), we get a palindrome (436765404567634).

The spelling of 124420400543213 in words is "one hundred twenty-four trillion, four hundred twenty billion, four hundred million, five hundred forty-three thousand, two hundred thirteen".