1245204012 has 48 divisors (see below), whose sum is σ = 3153661952. Its totient is φ = 380116800.

The previous prime is 1245203963. The next prime is 1245204029. The reversal of 1245204012 is 2104025421.

It is a super-2 number, since 2×1245204012² = 3101066063001792288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1245204012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11614 + ... + 51237.

Almost surely, 2^1245204012 is an apocalyptic number.

1245204012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1245204012 is an abundant number, since it is smaller than the sum of its proper divisors (1908457940).

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

1245204012 is a wasteful number, since it uses less digits than its factorization.

1245204012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62998 (or 62996 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1245204012 is about 35287.4483634054. The cubic root of 1245204012 is about 1075.8378935641.

Adding to 1245204012 its reverse (2104025421), we get a palindrome (3349229433).

The spelling of 1245204012 in words is "one billion, two hundred forty-five million, two hundred four thousand, twelve".