2020123123 has 2 divisors, whose sum is σ = 2020123124. Its totient is φ = 2020123122.

The previous prime is 2020123117. The next prime is 2020123181. The reversal of 2020123123 is 3213210202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020123123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2020123097 and 2020123106.

It is not a weakly prime, because it can be changed into another prime (2020123103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010061561 + 1010061562.

It is an arithmetic number, because the mean of its divisors is an integer number (1010061562).

Almost surely, 2^2020123123 is an apocalyptic number.

2020123123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020123123 is an equidigital number, since it uses as much as digits as its factorization.

2020123123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2020123123 is about 44945.7798130147. The cubic root of 2020123123 is about 1264.1325476137.

Adding to 2020123123 its reverse (3213210202), we get a palindrome (5233333325).

The spelling of 2020123123 in words is "two billion, twenty million, one hundred twenty-three thousand, one hundred twenty-three".