1040253520 has 40 divisors (see below), whose sum is σ = 2483963784. Its totient is φ = 404854272.

The previous prime is 1040253497. The next prime is 1040253523. The reversal of 1040253520 is 253520401.

It can be written as a sum of positive squares in 4 ways, for example, as 310605376 + 729648144 = 17624^2 + 27012^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1040253491 and 1040253500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040253523) 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, 172759 + ... + 178678.

Almost surely, 2^1040253520 is an apocalyptic number.

1040253520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040253520 is an abundant number, since it is smaller than the sum of its proper divisors (1443710264).

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

1040253520 is a wasteful number, since it uses less digits than its factorization.

1040253520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351487 (or 351481 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1040253520 is about 32252.9614144190. The cubic root of 1040253520 is about 1013.2417228278.

Adding to 1040253520 its reverse (253520401), we get a palindrome (1293773921).

The spelling of 1040253520 in words is "one billion, forty million, two hundred fifty-three thousand, five hundred twenty".