123365642 has 8 divisors (see below), whose sum is σ = 186880932. Its totient is φ = 61072000.

The previous prime is 123365591. The next prime is 123365657. The reversal of 123365642 is 246563321.

It can be written as a sum of positive squares in 2 ways, for example, as 106481761 + 16883881 = 10319^2 + 4109^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 123365599 and 123365608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305159 + ... + 305562.

Almost surely, 2^123365642 is an apocalyptic number.

123365642 is a deficient number, since it is larger than the sum of its proper divisors (63515290).

123365642 is a wasteful number, since it uses less digits than its factorization.

123365642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610824.

The product of its digits is 25920, while the sum is 32.

The square root of 123365642 is about 11107.0086882112. The cubic root of 123365642 is about 497.8112890688.

The spelling of 123365642 in words is "one hundred twenty-three million, three hundred sixty-five thousand, six hundred forty-two".