1245104443 has 4 divisors (see below), whose sum is σ = 1358295768. Its totient is φ = 1131913120.

The previous prime is 1245104423. The next prime is 1245104449. The reversal of 1245104443 is 3444015421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245104443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245104449) 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, 56595646 + ... + 56595667.

It is an arithmetic number, because the mean of its divisors is an integer number (339573942).

Almost surely, 2^1245104443 is an apocalyptic number.

1245104443 is a deficient number, since it is larger than the sum of its proper divisors (113191325).

1245104443 is a wasteful number, since it uses less digits than its factorization.

1245104443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113191324.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1245104443 is about 35286.0375077735. The cubic root of 1245104443 is about 1075.8092174175.

Adding to 1245104443 its reverse (3444015421), we get a palindrome (4689119864).

The spelling of 1245104443 in words is "one billion, two hundred forty-five million, one hundred four thousand, four hundred forty-three".