1292321320 has 32 divisors (see below), whose sum is σ = 2909253600. Its totient is φ = 516656448.

The previous prime is 1292321299. The next prime is 1292321341. The reversal of 1292321320 is 231232921.

It is an interprime number because it is at equal distance from previous prime (1292321299) and next prime (1292321341).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79747 + ... + 94573.

It is an arithmetic number, because the mean of its divisors is an integer number (90914175).

Almost surely, 2^1292321320 is an apocalyptic number.

1292321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1292321320 is an abundant number, since it is smaller than the sum of its proper divisors (1616932280).

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

1292321320 is a wasteful number, since it uses less digits than its factorization.

1292321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17017 (or 17013 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1292321320 is about 35948.8709141191. The cubic root of 1292321320 is about 1089.2398032459.

It can be divided in two parts, 12923 and 21320, that added together give a palindrome (34243).

The spelling of 1292321320 in words is "one billion, two hundred ninety-two million, three hundred twenty-one thousand, three hundred twenty".