124020345330521 has 2 divisors, whose sum is σ = 124020345330522. Its totient is φ = 124020345330520.

The previous prime is 124020345330449. The next prime is 124020345330527. The reversal of 124020345330521 is 125033543020421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113776120894921 + 10244224435600 = 10666589^2 + 3200660^2 .

It is a cyclic number.

It is not a de Polignac number, because 124020345330521 - 2²² = 124020341136217 is a prime.

It is not a weakly prime, because it can be changed into another prime (124020345330527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62010172665260 + 62010172665261.

It is an arithmetic number, because the mean of its divisors is an integer number (62010172665261).

Almost surely, 2^{124020345330521} is an apocalyptic number.

It is an amenable number.

124020345330521 is a deficient number, since it is larger than the sum of its proper divisors (1).

124020345330521 is an equidigital number, since it uses as much as digits as its factorization.

124020345330521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 124020345330521 its reverse (125033543020421), we get a palindrome (249053888350942).

The spelling of 124020345330521 in words is "one hundred twenty-four trillion, twenty billion, three hundred forty-five million, three hundred thirty thousand, five hundred twenty-one".