1042221996 has 18 divisors (see below), whose sum is σ = 2634505692. Its totient is φ = 347407320.

The previous prime is 1042221979. The next prime is 1042221997. The reversal of 1042221996 is 6991222401.

1042221996 is a `hidden beast` number, since 10 + 422 + 219 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 28950611 = 1042221996 / (1 + 0 + 4 + 2 + 2 + 2 + 1 + 9 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 1042221996.

It is not an unprimeable number, because it can be changed into a prime (1042221997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14475270 + ... + 14475341.

Almost surely, 2^1042221996 is an apocalyptic number.

It is an amenable number.

1042221996 is an abundant number, since it is smaller than the sum of its proper divisors (1592283696).

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

1042221996 is a wasteful number, since it uses less digits than its factorization.

1042221996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28950621 (or 28950616 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1042221996 is about 32283.4631971231. The cubic root of 1042221996 is about 1013.8804406028.

The spelling of 1042221996 in words is "one billion, forty-two million, two hundred twenty-one thousand, nine hundred ninety-six".