1040451443 has 4 divisors (see below), whose sum is σ = 1042728600. Its totient is φ = 1038174288.

The previous prime is 1040451439. The next prime is 1040451463. The reversal of 1040451443 is 3441540401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1040451443 - 2² = 1040451439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040451413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137893 + ... + 1138806.

It is an arithmetic number, because the mean of its divisors is an integer number (260682150).

Almost surely, 2^1040451443 is an apocalyptic number.

1040451443 is a deficient number, since it is larger than the sum of its proper divisors (2277157).

1040451443 is an equidigital number, since it uses as much as digits as its factorization.

1040451443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277156.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1040451443 is about 32256.0295603783. The cubic root of 1040451443 is about 1013.3059799600.

Adding to 1040451443 its reverse (3441540401), we get a palindrome (4481991844).

The spelling of 1040451443 in words is "one billion, forty million, four hundred fifty-one thousand, four hundred forty-three".