105121427 has 2 divisors, whose sum is σ = 105121428. Its totient is φ = 105121426.

The previous prime is 105121411. The next prime is 105121447. The reversal of 105121427 is 724121501.

It is a weak prime.

It is an emirp because it is prime and its reverse (724121501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105121427 - 2⁴ = 105121411 is a prime.

It is a super-2 number, since 2×105121427² = 22101028829032658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105121447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52560713 + 52560714.

It is an arithmetic number, because the mean of its divisors is an integer number (52560714).

Almost surely, 2^105121427 is an apocalyptic number.

105121427 is a deficient number, since it is larger than the sum of its proper divisors (1).

105121427 is an equidigital number, since it uses as much as digits as its factorization.

105121427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 105121427 is about 10252.8740848603. The cubic root of 105121427 is about 471.9511868389.

Adding to 105121427 its reverse (724121501), we get a palindrome (829242928).

The spelling of 105121427 in words is "one hundred five million, one hundred twenty-one thousand, four hundred twenty-seven".