1245044105 has 4 divisors (see below), whose sum is σ = 1494052932. Its totient is φ = 996035280.

The previous prime is 1245044083. The next prime is 1245044111. The reversal of 1245044105 is 5014405421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 519657616 + 725386489 = 22796^2 + 26933^2 .

It is not a de Polignac number, because 1245044105 - 2¹² = 1245040009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124504406 + ... + 124504415.

It is an arithmetic number, because the mean of its divisors is an integer number (373513233).

Almost surely, 2^1245044105 is an apocalyptic number.

It is an amenable number.

1245044105 is a deficient number, since it is larger than the sum of its proper divisors (249008827).

1245044105 is an equidigital number, since it uses as much as digits as its factorization.

1245044105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249008826.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1245044105 is about 35285.1825133440. The cubic root of 1245044105 is about 1075.7918391631.

Adding to 1245044105 its reverse (5014405421), we get a palindrome (6259449526).

The spelling of 1245044105 in words is "one billion, two hundred forty-five million, forty-four thousand, one hundred five".