1242204122 has 16 divisors (see below), whose sum is σ = 1897994592. Its totient is φ = 609583920.

The previous prime is 1242204121. The next prime is 1242204157. The reversal of 1242204122 is 2214022421.

It is a junction number, because it is equal to n+sod(n) for n = 1242204094 and 1242204103.

It is not an unprimeable number, because it can be changed into a prime (1242204121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46073 + ... + 67875.

It is an arithmetic number, because the mean of its divisors is an integer number (118624662).

Almost surely, 2^1242204122 is an apocalyptic number.

1242204122 is a deficient number, since it is larger than the sum of its proper divisors (655790470).

1242204122 is a wasteful number, since it uses less digits than its factorization.

1242204122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22333.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1242204122 is about 35244.9162575257. The cubic root of 1242204122 is about 1074.9732452689.

Adding to 1242204122 its reverse (2214022421), we get a palindrome (3456226543).

The spelling of 1242204122 in words is "one billion, two hundred forty-two million, two hundred four thousand, one hundred twenty-two".