1243695104 has 48 divisors (see below), whose sum is σ = 2518588800. Its totient is φ = 613896192.

The previous prime is 1243695067. The next prime is 1243695109. The reversal of 1243695104 is 4015963421.

It is not an unprimeable number, because it can be changed into a prime (1243695109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157949 + ... + 165635.

It is an arithmetic number, because the mean of its divisors is an integer number (52470600).

Almost surely, 2^1243695104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243695104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259294400).

1243695104 is an abundant number, since it is smaller than the sum of its proper divisors (1274893696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243695104 is an frugal number, since it uses more digits than its factorization.

1243695104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7788 (or 7768 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1243695104 is about 35266.0616457239. The cubic root of 1243695104 is about 1075.4031598341.

The spelling of 1243695104 in words is "one billion, two hundred forty-three million, six hundred ninety-five thousand, one hundred four".