1342991321 has 8 divisors (see below), whose sum is σ = 1601579904. Its totient is φ = 1101085920.

The previous prime is 1342991317. The next prime is 1342991323. The reversal of 1342991321 is 1231992431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1342991321 - 2² = 1342991317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1342991323) 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, 4170620 + ... + 4170941.

It is an arithmetic number, because the mean of its divisors is an integer number (200197488).

Almost surely, 2^1342991321 is an apocalyptic number.

It is an amenable number.

1342991321 is a deficient number, since it is larger than the sum of its proper divisors (258588583).

1342991321 is an equidigital number, since it uses as much as digits as its factorization.

1342991321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8341591.

The product of its digits is 11664, while the sum is 35.

The square root of 1342991321 is about 36646.8459897984. The cubic root of 1342991321 is about 1103.2935231957.

The spelling of 1342991321 in words is "one billion, three hundred forty-two million, nine hundred ninety-one thousand, three hundred twenty-one".