2221603042 has 8 divisors (see below), whose sum is σ = 3387034332. Its totient is φ = 1092591600.

The previous prime is 2221603039. The next prime is 2221603073. The reversal of 2221603042 is 2403061222.

It can be written as a sum of positive squares in 2 ways, for example, as 1457025241 + 764577801 = 38171^2 + 27651^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9104809 + ... + 9105052.

Almost surely, 2^2221603042 is an apocalyptic number.

2221603042 is a deficient number, since it is larger than the sum of its proper divisors (1165431290).

2221603042 is a wasteful number, since it uses less digits than its factorization.

2221603042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18209924.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2221603042 is about 47133.8842235604. The cubic root of 2221603042 is about 1304.8346687003.

Adding to 2221603042 its reverse (2403061222), we get a palindrome (4624664264).

The spelling of 2221603042 in words is "two billion, two hundred twenty-one million, six hundred three thousand, forty-two".