124420310342021 has 2 divisors, whose sum is σ = 124420310342022. Its totient is φ = 124420310342020.

The previous prime is 124420310341993. The next prime is 124420310342033. The reversal of 124420310342021 is 120243013024421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90845412813796 + 33574897528225 = 9531286^2 + 5794385^2 .

It is a cyclic number.

It is not a de Polignac number, because 124420310342021 - 2²⁶ = 124420243233157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124420310342821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62210155171010 + 62210155171011.

It is an arithmetic number, because the mean of its divisors is an integer number (62210155171011).

Almost surely, 2^{124420310342021} is an apocalyptic number.

It is an amenable number.

124420310342021 is a deficient number, since it is larger than the sum of its proper divisors (1).

124420310342021 is an equidigital number, since it uses as much as digits as its factorization.

124420310342021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 124420310342021 its reverse (120243013024421), we get a palindrome (244663323366442).

The spelling of 124420310342021 in words is "one hundred twenty-four trillion, four hundred twenty billion, three hundred ten million, three hundred forty-two thousand, twenty-one".