1321432242 has 16 divisors (see below), whose sum is σ = 2846161920. Its totient is φ = 406594512.

The previous prime is 1321432181. The next prime is 1321432247. The reversal of 1321432242 is 2422341231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1321432247) 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, 8470642 + ... + 8470797.

It is an arithmetic number, because the mean of its divisors is an integer number (177885120).

Almost surely, 2^1321432242 is an apocalyptic number.

1321432242 is an abundant number, since it is smaller than the sum of its proper divisors (1524729678).

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

1321432242 is a wasteful number, since it uses less digits than its factorization.

1321432242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16941457.

The product of its digits is 2304, while the sum is 24.

The square root of 1321432242 is about 36351.5094872276. The cubic root of 1321432242 is about 1097.3579130540.

Adding to 1321432242 its reverse (2422341231), we get a palindrome (3743773473).

The spelling of 1321432242 in words is "one billion, three hundred twenty-one million, four hundred thirty-two thousand, two hundred forty-two".