1215042203 has 8 divisors (see below), whose sum is σ = 1258093200. Its totient is φ = 1172068128.

The previous prime is 1215042163. The next prime is 1215042211. The reversal of 1215042203 is 3022405121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1215042203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215042233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13913 + ... + 51221.

It is an arithmetic number, because the mean of its divisors is an integer number (157261650).

Almost surely, 2^1215042203 is an apocalyptic number.

1215042203 is a deficient number, since it is larger than the sum of its proper divisors (43050997).

1215042203 is a wasteful number, since it uses less digits than its factorization.

1215042203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38461.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1215042203 is about 34857.4554865957. The cubic root of 1215042203 is about 1067.0803460655.

Adding to 1215042203 its reverse (3022405121), we get a palindrome (4237447324).

The spelling of 1215042203 in words is "one billion, two hundred fifteen million, forty-two thousand, two hundred three".