123402122573 has 2 divisors, whose sum is σ = 123402122574. Its totient is φ = 123402122572.

The previous prime is 123402122513. The next prime is 123402122587. The reversal of 123402122573 is 375221204321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96256924009 + 27145198564 = 310253^2 + 164758^2 .

It is a cyclic number.

It is not a de Polignac number, because 123402122573 - 2⁶ = 123402122509 is a prime.

It is a super-2 number, since 2×123402122573² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123402122513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61701061286 + 61701061287.

It is an arithmetic number, because the mean of its divisors is an integer number (61701061287).

Almost surely, 2^123402122573 is an apocalyptic number.

It is an amenable number.

123402122573 is a deficient number, since it is larger than the sum of its proper divisors (1).

123402122573 is an equidigital number, since it uses as much as digits as its factorization.

123402122573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 123402122573 its reverse (375221204321), we get a palindrome (498623326894).

The spelling of 123402122573 in words is "one hundred twenty-three billion, four hundred two million, one hundred twenty-two thousand, five hundred seventy-three".