1212424636 has 12 divisors (see below), whose sum is σ = 2122029000. Its totient is φ = 606130640.

The previous prime is 1212424607. The next prime is 1212424651. The reversal of 1212424636 is 6364242121.

It is a junction number, because it is equal to n+sod(n) for n = 1212424598 and 1212424607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23451 + ... + 54541.

It is an arithmetic number, because the mean of its divisors is an integer number (176835750).

Almost surely, 2^1212424636 is an apocalyptic number.

It is an amenable number.

1212424636 is a deficient number, since it is larger than the sum of its proper divisors (909604364).

1212424636 is a wasteful number, since it uses less digits than its factorization.

1212424636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40844 (or 40842 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 1212424636 is about 34819.8885121707. Note that the first 3 decimals coincide. The cubic root of 1212424636 is about 1066.3135242869.

Adding to 1212424636 its reverse (6364242121), we get a palindrome (7576666757).

The spelling of 1212424636 in words is "one billion, two hundred twelve million, four hundred twenty-four thousand, six hundred thirty-six".