1320125880 has 32 divisors (see below), whose sum is σ = 3960378000. Its totient is φ = 352033536.

The previous prime is 1320125879. The next prime is 1320125897. The reversal of 1320125880 is 885210231.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5500405 + ... + 5500644.

Almost surely, 2^1320125880 is an apocalyptic number.

1320125880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320125880 is an abundant number, since it is smaller than the sum of its proper divisors (2640252120).

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

1320125880 is a wasteful number, since it uses less digits than its factorization.

1320125880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001063 (or 11001059 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1320125880 is about 36333.5365743551. The cubic root of 1320125880 is about 1096.9961794513.

The spelling of 1320125880 in words is "one billion, three hundred twenty million, one hundred twenty-five thousand, eight hundred eighty".