1243312124 has 6 divisors (see below), whose sum is σ = 2175796224. Its totient is φ = 621656060.

The previous prime is 1243312069. The next prime is 1243312163. The reversal of 1243312124 is 4212133421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243312124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155414012 + ... + 155414019.

It is an arithmetic number, because the mean of its divisors is an integer number (362632704).

Almost surely, 2^1243312124 is an apocalyptic number.

It is an amenable number.

1243312124 is a deficient number, since it is larger than the sum of its proper divisors (932484100).

1243312124 is a wasteful number, since it uses less digits than its factorization.

1243312124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310828035 (or 310828033 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1243312124 is about 35260.6313613355. The cubic root of 1243312124 is about 1075.2927629521.

Adding to 1243312124 its reverse (4212133421), we get a palindrome (5455445545).

The spelling of 1243312124 in words is "one billion, two hundred forty-three million, three hundred twelve thousand, one hundred twenty-four".