1243212104 has 32 divisors (see below), whose sum is σ = 2456740800. Its totient is φ = 588162240.

The previous prime is 1243212079. The next prime is 1243212137. The reversal of 1243212104 is 4012123421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130214 + ... + 139434.

It is an arithmetic number, because the mean of its divisors is an integer number (76773150).

Almost surely, 2^1243212104 is an apocalyptic number.

It is an amenable number.

1243212104 is a deficient number, since it is larger than the sum of its proper divisors (1213528696).

1243212104 is a wasteful number, since it uses less digits than its factorization.

1243212104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133 (or 10129 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1243212104 is about 35259.2130371624. The cubic root of 1243212104 is about 1075.2639276972.

Adding to 1243212104 its reverse (4012123421), we get a palindrome (5255335525).

The spelling of 1243212104 in words is "one billion, two hundred forty-three million, two hundred twelve thousand, one hundred four".