1075720040 has 32 divisors (see below), whose sum is σ = 2435800680. Its totient is φ = 427544832.

The previous prime is 1075720031. The next prime is 1075720081. The reversal of 1075720040 is 400275701.

It can be written as a sum of positive squares in 4 ways, for example, as 383924836 + 691795204 = 19594^2 + 26302^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1075719991 and 1075720009.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79367 + ... + 91926.

Almost surely, 2^1075720040 is an apocalyptic number.

1075720040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1075720040 is an abundant number, since it is smaller than the sum of its proper divisors (1360080640).

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

1075720040 is a wasteful number, since it uses less digits than its factorization.

1075720040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171461 (or 171457 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 1075720040 is about 32798.1712904851. The cubic root of 1075720040 is about 1024.6284721316.

Adding to 1075720040 its reverse (400275701), we get a palindrome (1475995741).

The spelling of 1075720040 in words is "one billion, seventy-five million, seven hundred twenty thousand, forty".