961744123 has 2 divisors, whose sum is σ = 961744124. Its totient is φ = 961744122.

The previous prime is 961744099. The next prime is 961744153. The reversal of 961744123 is 321447169.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961744123 is a prime.

It is not a weakly prime, because it can be changed into another prime (961744153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480872061 + 480872062.

It is an arithmetic number, because the mean of its divisors is an integer number (480872062).

Almost surely, 2^961744123 is an apocalyptic number.

961744123 is a deficient number, since it is larger than the sum of its proper divisors (1).

961744123 is an equidigital number, since it uses as much as digits as its factorization.

961744123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 961744123 is about 31011.9996614214. Note that the first 3 decimals coincide. The cubic root of 961744123 is about 987.0818818046.

The spelling of 961744123 in words is "nine hundred sixty-one million, seven hundred forty-four thousand, one hundred twenty-three".