1245544412 has 72 divisors (see below), whose sum is σ = 2639155680. Its totient is φ = 503539200.

The previous prime is 1245544393. The next prime is 1245544439. The reversal of 1245544412 is 2144455421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1102664 + ... + 1103792.

It is an arithmetic number, because the mean of its divisors is an integer number (36654940).

Almost surely, 2^1245544412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245544412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319577840).

1245544412 is an abundant number, since it is smaller than the sum of its proper divisors (1393611268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245544412 is a wasteful number, since it uses less digits than its factorization.

1245544412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243 (or 1210 counting only the distinct ones).

The product of its digits is 25600, while the sum is 32.

The square root of 1245544412 is about 35292.2712785675. The cubic root of 1245544412 is about 1075.9359181582.

Adding to 1245544412 its reverse (2144455421), we get a palindrome (3389999833).

The spelling of 1245544412 in words is "one billion, two hundred forty-five million, five hundred forty-four thousand, four hundred twelve".