123843469 has 2 divisors, whose sum is σ = 123843470. Its totient is φ = 123843468.

The previous prime is 123843451. The next prime is 123843497. The reversal of 123843469 is 964348321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103022500 + 20820969 = 10150^2 + 4563^2 .

It is an emirp because it is prime and its reverse (964348321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123843469 - 2⁵ = 123843437 is a prime.

It is a super-2 number, since 2×123843469² = 30674409627907922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123843169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61921734 + 61921735.

It is an arithmetic number, because the mean of its divisors is an integer number (61921735).

Almost surely, 2^123843469 is an apocalyptic number.

It is an amenable number.

123843469 is a deficient number, since it is larger than the sum of its proper divisors (1).

123843469 is an equidigital number, since it uses as much as digits as its factorization.

123843469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The square root of 123843469 is about 11128.4980567910. The cubic root of 123843469 is about 498.4531782865.

The spelling of 123843469 in words is "one hundred twenty-three million, eight hundred forty-three thousand, four hundred sixty-nine".