1209240132 has 12 divisors (see below), whose sum is σ = 2821560336. Its totient is φ = 403080040.

The previous prime is 1209240119. The next prime is 1209240143. The reversal of 1209240132 is 2310429021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

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, 50384994 + ... + 50385017.

It is an arithmetic number, because the mean of its divisors is an integer number (235130028).

Almost surely, 2^1209240132 is an apocalyptic number.

1209240132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1209240132 is an abundant number, since it is smaller than the sum of its proper divisors (1612320204).

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

1209240132 is a wasteful number, since it uses less digits than its factorization.

1209240132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100770018 (or 100770016 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1209240132 is about 34774.1302119837. The cubic root of 1209240132 is about 1065.3791275110.

Adding to 1209240132 its reverse (2310429021), we get a palindrome (3519669153).

The spelling of 1209240132 in words is "one billion, two hundred nine million, two hundred forty thousand, one hundred thirty-two".