4155123173 has 2 divisors, whose sum is σ = 4155123174. Its totient is φ = 4155123172.

The previous prime is 4155123149. The next prime is 4155123211. The reversal of 4155123173 is 3713215514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3597360484 + 557762689 = 59978^2 + 23617^2 .

It is a cyclic number.

It is not a de Polignac number, because 4155123173 - 2²⁶ = 4088014309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4155123143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077561586 + 2077561587.

It is an arithmetic number, because the mean of its divisors is an integer number (2077561587).

Almost surely, 2^4155123173 is an apocalyptic number.

It is an amenable number.

4155123173 is a deficient number, since it is larger than the sum of its proper divisors (1).

4155123173 is an equidigital number, since it uses as much as digits as its factorization.

4155123173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 4155123173 is about 64460.2449033511. The cubic root of 4155123173 is about 1607.6615838417.

Adding to 4155123173 its reverse (3713215514), we get a palindrome (7868338687).

The spelling of 4155123173 in words is "four billion, one hundred fifty-five million, one hundred twenty-three thousand, one hundred seventy-three".