2190242123 has 2 divisors, whose sum is σ = 2190242124. Its totient is φ = 2190242122.

The previous prime is 2190242113. The next prime is 2190242167. The reversal of 2190242123 is 3212420912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2190242123 - 2¹⁰ = 2190241099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2190242092 and 2190242101.

It is not a weakly prime, because it can be changed into another prime (2190242113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095121061 + 1095121062.

It is an arithmetic number, because the mean of its divisors is an integer number (1095121062).

Almost surely, 2^2190242123 is an apocalyptic number.

2190242123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190242123 is an equidigital number, since it uses as much as digits as its factorization.

2190242123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2190242123 is about 46800.0226816184. The cubic root of 2190242123 is about 1298.6657164015.

The spelling of 2190242123 in words is "two billion, one hundred ninety million, two hundred forty-two thousand, one hundred twenty-three".