123116642 has 16 divisors (see below), whose sum is σ = 202803264. Its totient is φ = 55590000.

The previous prime is 123116597. The next prime is 123116647. The reversal of 123116642 is 246611321.

It is not an unprimeable number, because it can be changed into a prime (123116647) 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, 15209 + ... + 21852.

It is an arithmetic number, because the mean of its divisors is an integer number (12675204).

Almost surely, 2^123116642 is an apocalyptic number.

123116642 is a deficient number, since it is larger than the sum of its proper divisors (79686622).

123116642 is a wasteful number, since it uses less digits than its factorization.

123116642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37225.

The product of its digits is 1728, while the sum is 26.

The square root of 123116642 is about 11095.7938877757. The cubic root of 123116642 is about 497.4761376735.

Adding to 123116642 its reverse (246611321), we get a palindrome (369727963).

The spelling of 123116642 in words is "one hundred twenty-three million, one hundred sixteen thousand, six hundred forty-two".