1245264445 has 8 divisors (see below), whose sum is σ = 1494510336. Its totient is φ = 996082896.

The previous prime is 1245264421. The next prime is 1245264473. The reversal of 1245264445 is 5444625421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245264445 - 2²¹ = 1243167293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55324 + ... + 74506.

It is an arithmetic number, because the mean of its divisors is an integer number (186813792).

Almost surely, 2^1245264445 is an apocalyptic number.

It is an amenable number.

1245264445 is a deficient number, since it is larger than the sum of its proper divisors (249245891).

1245264445 is a wasteful number, since it uses less digits than its factorization.

1245264445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32171.

The product of its digits is 153600, while the sum is 37.

The square root of 1245264445 is about 35288.3046489910. The cubic root of 1245264445 is about 1075.8552976893.

Adding to 1245264445 its reverse (5444625421), we get a palindrome (6689889866).

The spelling of 1245264445 in words is "one billion, two hundred forty-five million, two hundred sixty-four thousand, four hundred forty-five".