1321264342 has 8 divisors (see below), whose sum is σ = 1984826016. Its totient is φ = 659655672.

The previous prime is 1321264337. The next prime is 1321264369. The reversal of 1321264342 is 2434621231.

It is a happy number.

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

It is a super-2 number, since 2×1321264342² = 3491478922881385928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321264342.

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, 486558 + ... + 489265.

It is an arithmetic number, because the mean of its divisors is an integer number (248103252).

Almost surely, 2^1321264342 is an apocalyptic number.

1321264342 is a deficient number, since it is larger than the sum of its proper divisors (663561674).

1321264342 is an equidigital number, since it uses as much as digits as its factorization.

1321264342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976502.

The product of its digits is 6912, while the sum is 28.

The square root of 1321264342 is about 36349.2000187074. The cubic root of 1321264342 is about 1097.3114346468.

Adding to 1321264342 its reverse (2434621231), we get a palindrome (3755885573).

The spelling of 1321264342 in words is "one billion, three hundred twenty-one million, two hundred sixty-four thousand, three hundred forty-two".