123090061 has 2 divisors, whose sum is σ = 123090062. Its totient is φ = 123090060.

The previous prime is 123090029. The next prime is 123090091. The reversal of 123090061 is 160090321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123076836 + 13225 = 11094^2 + 115^2 .

It is an emirp because it is prime and its reverse (160090321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123090061 - 2⁵ = 123090029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123090091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61545030 + 61545031.

It is an arithmetic number, because the mean of its divisors is an integer number (61545031).

Almost surely, 2^123090061 is an apocalyptic number.

It is an amenable number.

123090061 is a deficient number, since it is larger than the sum of its proper divisors (1).

123090061 is an equidigital number, since it uses as much as digits as its factorization.

123090061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 123090061 is about 11094.5960268953. The cubic root of 123090061 is about 497.4403332397.

The spelling of 123090061 in words is "one hundred twenty-three million, ninety thousand, sixty-one".