1040043253 has 2 divisors, whose sum is σ = 1040043254. Its totient is φ = 1040043252.

The previous prime is 1040043239. The next prime is 1040043271. The reversal of 1040043253 is 3523400401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 678967249 + 361076004 = 26057^2 + 19002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040043253 is a prime.

It is a super-2 number, since 2×1040043253² = 2163379936221644018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040043283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520021626 + 520021627.

It is an arithmetic number, because the mean of its divisors is an integer number (520021627).

Almost surely, 2^1040043253 is an apocalyptic number.

It is an amenable number.

1040043253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040043253 is an equidigital number, since it uses as much as digits as its factorization.

1040043253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1040043253 is about 32249.7015955187. The cubic root of 1040043253 is about 1013.1734491972.

Adding to 1040043253 its reverse (3523400401), we get a palindrome (4563443654).

The spelling of 1040043253 in words is "one billion, forty million, forty-three thousand, two hundred fifty-three".