123443242 has 16 divisors (see below), whose sum is σ = 199825920. Its totient is φ = 56854512.

The previous prime is 123443237. The next prime is 123443297. The reversal of 123443242 is 242344321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8359 + ... + 17797.

It is an arithmetic number, because the mean of its divisors is an integer number (12489120).

Almost surely, 2^123443242 is an apocalyptic number.

123443242 is a deficient number, since it is larger than the sum of its proper divisors (76382678).

123443242 is a wasteful number, since it uses less digits than its factorization.

123443242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9957.

The product of its digits is 4608, while the sum is 25.

The square root of 123443242 is about 11110.5014288285. The cubic root of 123443242 is about 497.9156456748.

Adding to 123443242 its reverse (242344321), we get a palindrome (365787563).

The spelling of 123443242 in words is "one hundred twenty-three million, four hundred forty-three thousand, two hundred forty-two".