123242719 has 8 divisors (see below), whose sum is σ = 124342400. Its totient is φ = 122148000.

The previous prime is 123242711. The next prime is 123242731. The reversal of 123242719 is 917242321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123242719 - 2³ = 123242711 is a prime.

It is a super-2 number, since 2×123242719² = 30377535573025922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123242711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62194 + ... + 64144.

It is an arithmetic number, because the mean of its divisors is an integer number (15542800).

Almost surely, 2^123242719 is an apocalyptic number.

123242719 is a deficient number, since it is larger than the sum of its proper divisors (1099681).

123242719 is a wasteful number, since it uses less digits than its factorization.

123242719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481.

The product of its digits is 6048, while the sum is 31.

The square root of 123242719 is about 11101.4737309963. The cubic root of 123242719 is about 497.6458924164.

The spelling of 123242719 in words is "one hundred twenty-three million, two hundred forty-two thousand, seven hundred nineteen".