1321332142 has 16 divisors (see below), whose sum is σ = 2135105280. Its totient is φ = 609661152.

The previous prime is 1321332119. The next prime is 1321332151. The reversal of 1321332142 is 2412331231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119859 + ... + 130417.

It is an arithmetic number, because the mean of its divisors is an integer number (133444080).

Almost surely, 2^1321332142 is an apocalyptic number.

1321332142 is a deficient number, since it is larger than the sum of its proper divisors (813773138).

1321332142 is a wasteful number, since it uses less digits than its factorization.

1321332142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15387.

The product of its digits is 864, while the sum is 22.

The square root of 1321332142 is about 36350.1326269933. The cubic root of 1321332142 is about 1097.3302036497.

Adding to 1321332142 its reverse (2412331231), we get a palindrome (3733663373).

The spelling of 1321332142 in words is "one billion, three hundred twenty-one million, three hundred thirty-two thousand, one hundred forty-two".