1000321120 has 48 divisors (see below), whose sum is σ = 2487648240. Its totient is φ = 379067904.

The previous prime is 1000321103. The next prime is 1000321121. The reversal of 1000321120 is 211230001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1000321097 and 1000321106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000321121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161487 + ... + 167566.

It is an arithmetic number, because the mean of its divisors is an integer number (51826005).

Almost surely, 2^1000321120 is an apocalyptic number.

1000321120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000321120 is an abundant number, since it is smaller than the sum of its proper divisors (1487327120).

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

1000321120 is a wasteful number, since it uses less digits than its factorization.

1000321120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329087 (or 329079 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1000321120 is about 31627.8535471505. The cubic root of 1000321120 is about 1000.1070285445.

Adding to 1000321120 its reverse (211230001), we get a palindrome (1211551121).

The spelling of 1000321120 in words is "one billion, three hundred twenty-one thousand, one hundred twenty".