123421171 has 2 divisors, whose sum is σ = 123421172. Its totient is φ = 123421170.

The previous prime is 123421121. The next prime is 123421211. The reversal of 123421171 is 171124321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123421171 - 2⁹ = 123420659 is a prime.

It is a super-2 number, since 2×123421171² = 30465570902022482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123421121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61710585 + 61710586.

It is an arithmetic number, because the mean of its divisors is an integer number (61710586).

Almost surely, 2^123421171 is an apocalyptic number.

123421171 is a deficient number, since it is larger than the sum of its proper divisors (1).

123421171 is an equidigital number, since it uses as much as digits as its factorization.

123421171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 22.

The square root of 123421171 is about 11109.5081349266. The cubic root of 123421171 is about 497.8859690098.

Adding to 123421171 its reverse (171124321), we get a palindrome (294545492).

The spelling of 123421171 in words is "one hundred twenty-three million, four hundred twenty-one thousand, one hundred seventy-one".