1321040342 has 8 divisors (see below), whose sum is σ = 2009470032. Its totient is φ = 651217000.

The previous prime is 1321040269. The next prime is 1321040353. The reversal of 1321040342 is 2430401231.

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

It is a congruent number.

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, 4651409 + ... + 4651692.

It is an arithmetic number, because the mean of its divisors is an integer number (251183754).

Almost surely, 2^1321040342 is an apocalyptic number.

1321040342 is a deficient number, since it is larger than the sum of its proper divisors (688429690).

1321040342 is an equidigital number, since it uses as much as digits as its factorization.

1321040342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9303174.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1321040342 is about 36346.1186648588. The cubic root of 1321040342 is about 1097.2494203965.

Adding to 1321040342 its reverse (2430401231), we get a palindrome (3751441573).

The spelling of 1321040342 in words is "one billion, three hundred twenty-one million, forty thousand, three hundred forty-two".