1320430040 has 16 divisors (see below), whose sum is σ = 2970967680. Its totient is φ = 528172000.

The previous prime is 1320430039. The next prime is 1320430087. The reversal of 1320430040 is 400340231.

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, 16505336 + ... + 16505415.

It is an arithmetic number, because the mean of its divisors is an integer number (185685480).

Almost surely, 2^1320430040 is an apocalyptic number.

1320430040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320430040 is an abundant number, since it is smaller than the sum of its proper divisors (1650537640).

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

1320430040 is a wasteful number, since it uses less digits than its factorization.

1320430040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33010762 (or 33010758 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1320430040 is about 36337.7219979459. The cubic root of 1320430040 is about 1097.0804231185.

Adding to 1320430040 its reverse (400340231), we get a palindrome (1720770271).

The spelling of 1320430040 in words is "one billion, three hundred twenty million, four hundred thirty thousand, forty".