123505061 has 2 divisors, whose sum is σ = 123505062. Its totient is φ = 123505060.

The previous prime is 123505043. The next prime is 123505069. The reversal of 123505061 is 160505321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122988100 + 516961 = 11090^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 123505061 - 2¹⁰ = 123504037 is a prime.

It is a super-2 number, since 2×123505061² = 30507000185227442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123505069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61752530 + 61752531.

It is an arithmetic number, because the mean of its divisors is an integer number (61752531).

Almost surely, 2^123505061 is an apocalyptic number.

It is an amenable number.

123505061 is a deficient number, since it is larger than the sum of its proper divisors (1).

123505061 is an equidigital number, since it uses as much as digits as its factorization.

123505061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 123505061 is about 11113.2830882687. The cubic root of 123505061 is about 497.9987486730.

The spelling of 123505061 in words is "one hundred twenty-three million, five hundred five thousand, sixty-one".