1215230442 has 64 divisors (see below), whose sum is σ = 2665958400. Its totient is φ = 368202240.

The previous prime is 1215230417. The next prime is 1215230459. The reversal of 1215230442 is 2440325121.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 196534 + ... + 202622.

It is an arithmetic number, because the mean of its divisors is an integer number (41655600).

Almost surely, 2^1215230442 is an apocalyptic number.

1215230442 is an abundant number, since it is smaller than the sum of its proper divisors (1450727958).

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

1215230442 is a wasteful number, since it uses less digits than its factorization.

1215230442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6191.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1215230442 is about 34860.1555073984. The cubic root of 1215230442 is about 1067.1354486139.

Adding to 1215230442 its reverse (2440325121), we get a palindrome (3655555563).

The spelling of 1215230442 in words is "one billion, two hundred fifteen million, two hundred thirty thousand, four hundred forty-two".