123161273 has 2 divisors, whose sum is σ = 123161274. Its totient is φ = 123161272.

The previous prime is 123161239. The next prime is 123161281. The reversal of 123161273 is 372161321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78712384 + 44448889 = 8872^2 + 6667^2 .

It is a cyclic number.

It is not a de Polignac number, because 123161273 - 2¹⁰ = 123160249 is a prime.

It is not a weakly prime, because it can be changed into another prime (123164273) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61580636 + 61580637.

It is an arithmetic number, because the mean of its divisors is an integer number (61580637).

Almost surely, 2^123161273 is an apocalyptic number.

It is an amenable number.

123161273 is a deficient number, since it is larger than the sum of its proper divisors (1).

123161273 is an equidigital number, since it uses as much as digits as its factorization.

123161273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 123161273 is about 11097.8048730368. The cubic root of 123161273 is about 497.5362437506.

The spelling of 123161273 in words is "one hundred twenty-three million, one hundred sixty-one thousand, two hundred seventy-three".