1940123 has 2 divisors, whose sum is σ = 1940124. Its totient is φ = 1940122.

The previous prime is 1940087. The next prime is 1940131. The reversal of 1940123 is 3210491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1940123 - 2⁸ = 1939867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1940095 and 1940104.

It is not a weakly prime, because it can be changed into another prime (1940143) 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, 970061 + 970062.

It is an arithmetic number, because the mean of its divisors is an integer number (970062).

2^1940123 is an apocalyptic number.

1940123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940123 is an equidigital number, since it uses as much as digits as its factorization.

1940123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1940123 is about 1392.8829814453. The cubic root of 1940123 is about 124.7220062140.

The spelling of 1940123 in words is "one million, nine hundred forty thousand, one hundred twenty-three".