1205420132 has 24 divisors (see below), whose sum is σ = 2427028800. Its totient is φ = 513139680.

The previous prime is 1205420129. The next prime is 1205420143. The reversal of 1205420132 is 2310245021.

It is an unprimeable number.

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, 140294 + ... + 148637.

It is an arithmetic number, because the mean of its divisors is an integer number (101126200).

Almost surely, 2^1205420132 is an apocalyptic number.

It is an amenable number.

1205420132 is an abundant number, since it is smaller than the sum of its proper divisors (1221608668).

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

1205420132 is a wasteful number, since it uses less digits than its factorization.

1205420132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289091 (or 289089 counting only the distinct ones).

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

The square root of 1205420132 is about 34719.1608769567. The cubic root of 1205420132 is about 1064.2560968428.

Adding to 1205420132 its reverse (2310245021), we get a palindrome (3515665153).

The spelling of 1205420132 in words is "one billion, two hundred five million, four hundred twenty thousand, one hundred thirty-two".