1242204425 has 72 divisors (see below), whose sum is σ = 1971748800. Its totient is φ = 754185600.

The previous prime is 1242204421. The next prime is 1242204437. The reversal of 1242204425 is 5244022421.

It is not a de Polignac number, because 1242204425 - 2² = 1242204421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242204394 and 1242204403.

It is not an unprimeable number, because it can be changed into a prime (1242204421) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3559151 + ... + 3559499.

It is an arithmetic number, because the mean of its divisors is an integer number (27385400).

Almost surely, 2^1242204425 is an apocalyptic number.

It is an amenable number.

1242204425 is a deficient number, since it is larger than the sum of its proper divisors (729544375).

1242204425 is a wasteful number, since it uses less digits than its factorization.

1242204425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1242204425 is about 35244.9205560177. The cubic root of 1242204425 is about 1074.9733326718.

Adding to 1242204425 its reverse (5244022421), we get a palindrome (6486226846).

The spelling of 1242204425 in words is "one billion, two hundred forty-two million, two hundred four thousand, four hundred twenty-five".