1012040320 has 64 divisors (see below), whose sum is σ = 2546776800. Its totient is φ = 383505408.

The previous prime is 1012040297. The next prime is 1012040357. The reversal of 1012040320 is 230402101.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1012040320.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29454 + ... + 53773.

Almost surely, 2^1012040320 is an apocalyptic number.

1012040320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012040320 is an abundant number, since it is smaller than the sum of its proper divisors (1534736480).

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

1012040320 is an equidigital number, since it uses as much as digits as its factorization.

1012040320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83265 (or 83253 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1012040320 is about 31812.5811590320. The cubic root of 1012040320 is about 1003.9974391876.

Adding to 1012040320 its reverse (230402101), we get a palindrome (1242442421).

The spelling of 1012040320 in words is "one billion, twelve million, forty thousand, three hundred twenty".