1205242436 has 24 divisors (see below), whose sum is σ = 2202318720. Its totient is φ = 576397472.

The previous prime is 1205242433. The next prime is 1205242457. The reversal of 1205242436 is 6342425021.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 1205242399 and 1205242408.

It is not an unprimeable number, because it can be changed into a prime (1205242433) 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, 36140 + ... + 60963.

It is an arithmetic number, because the mean of its divisors is an integer number (91763280).

Almost surely, 2^1205242436 is an apocalyptic number.

It is an amenable number.

1205242436 is a deficient number, since it is larger than the sum of its proper divisors (997076284).

1205242436 is a wasteful number, since it uses less digits than its factorization.

1205242436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97243 (or 97241 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 1205242436 is about 34716.6017346168. The cubic root of 1205242436 is about 1064.2037987989.

Adding to 1205242436 its reverse (6342425021), we get a palindrome (7547667457).

The spelling of 1205242436 in words is "one billion, two hundred five million, two hundred forty-two thousand, four hundred thirty-six".