2161404127 has 2 divisors, whose sum is σ = 2161404128. Its totient is φ = 2161404126.

The previous prime is 2161404101. The next prime is 2161404143. The reversal of 2161404127 is 7214041612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2161404127 - 2¹¹ = 2161402079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2161404095 and 2161404104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161404187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080702063 + 1080702064.

It is an arithmetic number, because the mean of its divisors is an integer number (1080702064).

Almost surely, 2^2161404127 is an apocalyptic number.

2161404127 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161404127 is an equidigital number, since it uses as much as digits as its factorization.

2161404127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2161404127 is about 46490.9037016920. The cubic root of 2161404127 is about 1292.9408551911.

Adding to 2161404127 its reverse (7214041612), we get a palindrome (9375445739).

The spelling of 2161404127 in words is "two billion, one hundred sixty-one million, four hundred four thousand, one hundred twenty-seven".