387722123 has 2 divisors, whose sum is σ = 387722124. Its totient is φ = 387722122.

The previous prime is 387722119. The next prime is 387722131. The reversal of 387722123 is 321227783.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (321227783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387722123 - 2² = 387722119 is a prime.

It is not a weakly prime, because it can be changed into another prime (387722143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193861061 + 193861062.

It is an arithmetic number, because the mean of its divisors is an integer number (193861062).

Almost surely, 2^387722123 is an apocalyptic number.

387722123 is a deficient number, since it is larger than the sum of its proper divisors (1).

387722123 is an equidigital number, since it uses as much as digits as its factorization.

387722123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 35.

The square root of 387722123 is about 19690.6608065854. The cubic root of 387722123 is about 729.1891434501.

The spelling of 387722123 in words is "three hundred eighty-seven million, seven hundred twenty-two thousand, one hundred twenty-three".