2042123117 has 2 divisors, whose sum is σ = 2042123118. Its totient is φ = 2042123116.

The previous prime is 2042123101. The next prime is 2042123143. The reversal of 2042123117 is 7113212402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1165607881 + 876515236 = 34141^2 + 29606^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042123117 - 2⁴ = 2042123101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2042123092 and 2042123101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042123177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021061558 + 1021061559.

It is an arithmetic number, because the mean of its divisors is an integer number (1021061559).

Almost surely, 2^2042123117 is an apocalyptic number.

It is an amenable number.

2042123117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042123117 is an equidigital number, since it uses as much as digits as its factorization.

2042123117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2042123117 is about 45189.8563507343. The cubic root of 2042123117 is about 1268.7049681510.

Adding to 2042123117 its reverse (7113212402), we get a palindrome (9155335519).

The spelling of 2042123117 in words is "two billion, forty-two million, one hundred twenty-three thousand, one hundred seventeen".