123708619 has 2 divisors, whose sum is σ = 123708620. Its totient is φ = 123708618.

The previous prime is 123708593. The next prime is 123708691. The reversal of 123708619 is 916807321.

Together with next prime (123708691) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123708619 - 2¹³ = 123700427 is a prime.

It is a super-2 number, since 2×123708619² = 30607644829774322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123708019) 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, 61854309 + 61854310.

It is an arithmetic number, because the mean of its divisors is an integer number (61854310).

Almost surely, 2^123708619 is an apocalyptic number.

123708619 is a deficient number, since it is larger than the sum of its proper divisors (1).

123708619 is an equidigital number, since it uses as much as digits as its factorization.

123708619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 123708619 is about 11122.4376374966. The cubic root of 123708619 is about 498.2721949233.

The spelling of 123708619 in words is "one hundred twenty-three million, seven hundred eight thousand, six hundred nineteen".