123642146 has 8 divisors (see below), whose sum is σ = 185513664. Its totient is φ = 61804260.

The previous prime is 123642097. The next prime is 123642151. The reversal of 123642146 is 641246321.

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

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, 5171 + ... + 16553.

It is an arithmetic number, because the mean of its divisors is an integer number (23189208).

Almost surely, 2^123642146 is an apocalyptic number.

123642146 is a deficient number, since it is larger than the sum of its proper divisors (61871518).

123642146 is a wasteful number, since it uses less digits than its factorization.

123642146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16816.

The product of its digits is 6912, while the sum is 29.

The square root of 123642146 is about 11119.4489971401. The cubic root of 123642146 is about 498.1829325309.

Adding to 123642146 its reverse (641246321), we get a palindrome (764888467).

The spelling of 123642146 in words is "one hundred twenty-three million, six hundred forty-two thousand, one hundred forty-six".