27124121 has 2 divisors, whose sum is σ = 27124122. Its totient is φ = 27124120.

The previous prime is 27124103. The next prime is 27124127. The reversal of 27124121 is 12142172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18800896 + 8323225 = 4336^2 + 2885^2 .

It is a cyclic number.

It is not a de Polignac number, because 27124121 - 2⁶ = 27124057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27124093 and 27124102.

It is not a weakly prime, because it can be changed into another prime (27124127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13562060 + 13562061.

It is an arithmetic number, because the mean of its divisors is an integer number (13562061).

Almost surely, 2^27124121 is an apocalyptic number.

It is an amenable number.

27124121 is a deficient number, since it is larger than the sum of its proper divisors (1).

27124121 is an equidigital number, since it uses as much as digits as its factorization.

27124121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 20.

The square root of 27124121 is about 5208.0822766158. The cubic root of 27124121 is about 300.4590047647.

Adding to 27124121 its reverse (12142172), we get a palindrome (39266293).

The spelling of 27124121 in words is "twenty-seven million, one hundred twenty-four thousand, one hundred twenty-one".