1040442320 has 40 divisors (see below), whose sum is σ = 2441656224. Its totient is φ = 412284032.

The previous prime is 1040442317. The next prime is 1040442343. The reversal of 1040442320 is 232440401.

1040442320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1040442292 and 1040442301.

It is a congruent number.

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, 52214 + ... + 69333.

Almost surely, 2^1040442320 is an apocalyptic number.

1040442320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040442320 is an abundant number, since it is smaller than the sum of its proper divisors (1401213904).

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

1040442320 is a wasteful number, since it uses less digits than its factorization.

1040442320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121667 (or 121661 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1040442320 is about 32255.8881446473. Note that the first 3 decimals coincide. The cubic root of 1040442320 is about 1013.3030182913.

Adding to 1040442320 its reverse (232440401), we get a palindrome (1272882721).

The spelling of 1040442320 in words is "one billion, forty million, four hundred forty-two thousand, three hundred twenty".