19960123 has 2 divisors, whose sum is σ = 19960124. Its totient is φ = 19960122.

The previous prime is 19960117. The next prime is 19960133. The reversal of 19960123 is 32106991.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19960123 is a prime.

It is not a weakly prime, because it can be changed into another prime (19960133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9980061 + 9980062.

It is an arithmetic number, because the mean of its divisors is an integer number (9980062).

Almost surely, 2^19960123 is an apocalyptic number.

19960123 is a deficient number, since it is larger than the sum of its proper divisors (1).

19960123 is an equidigital number, since it uses as much as digits as its factorization.

19960123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 19960123 is about 4467.6753463071. The cubic root of 19960123 is about 271.2612369077.

The spelling of 19960123 in words is "nineteen million, nine hundred sixty thousand, one hundred twenty-three".