123008842 has 12 divisors (see below), whose sum is σ = 202812498. Its totient is φ = 55913000.

The previous prime is 123008833. The next prime is 123008857. The reversal of 123008842 is 248800321.

It can be written as a sum of positive squares in only one way, i.e., 83557881 + 39450961 = 9141^2 + 6281^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123008842.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 253909 + ... + 254392.

Almost surely, 2^123008842 is an apocalyptic number.

123008842 is a deficient number, since it is larger than the sum of its proper divisors (79803656).

123008842 is a wasteful number, since it uses less digits than its factorization.

123008842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508325 (or 508314 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 123008842 is about 11090.9351273912. The cubic root of 123008842 is about 497.3308998284.

The spelling of 123008842 in words is "one hundred twenty-three million, eight thousand, eight hundred forty-two".