1256412412 has 24 divisors (see below), whose sum is σ = 2217767552. Its totient is φ = 622782000.

The previous prime is 1256412407. The next prime is 1256412419. The reversal of 1256412412 is 2142146521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256412419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343063 + ... + 346705.

Almost surely, 2^1256412412 is an apocalyptic number.

It is an amenable number.

1256412412 is a deficient number, since it is larger than the sum of its proper divisors (961355140).

1256412412 is a wasteful number, since it uses less digits than its factorization.

1256412412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369 (or 4367 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 1256412412 is about 35445.9082546914. The cubic root of 1256412412 is about 1079.0562205387.

Adding to 1256412412 its reverse (2142146521), we get a palindrome (3398558933).

It can be divided in two parts, 12564 and 12412, that added together give a triangular number (24976 = T₂₂₃).

The spelling of 1256412412 in words is "one billion, two hundred fifty-six million, four hundred twelve thousand, four hundred twelve".