770440123 has 2 divisors, whose sum is σ = 770440124. Its totient is φ = 770440122.

The previous prime is 770440009. The next prime is 770440141. The reversal of 770440123 is 321044077.

It is a strong prime.

It is an emirp because it is prime and its reverse (321044077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 770440123 - 2⁹ = 770439611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 770440091 and 770440100.

It is not a weakly prime, because it can be changed into another prime (770440163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385220061 + 385220062.

It is an arithmetic number, because the mean of its divisors is an integer number (385220062).

Almost surely, 2^770440123 is an apocalyptic number.

770440123 is a deficient number, since it is larger than the sum of its proper divisors (1).

770440123 is an equidigital number, since it uses as much as digits as its factorization.

770440123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 770440123 is about 27756.8031840844. The cubic root of 770440123 is about 916.7402449075.

The spelling of 770440123 in words is "seven hundred seventy million, four hundred forty thousand, one hundred twenty-three".