1245512412 has 36 divisors (see below), whose sum is σ = 3333578976. Its totient is φ = 390748800.

The previous prime is 1245512383. The next prime is 1245512413. The reversal of 1245512412 is 2142155421.

It is a happy number.

1245512412 is a `hidden beast` number, since 1 + 245 + 5 + 1 + 2 + 412 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245512413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1016964 + ... + 1018187.

It is an arithmetic number, because the mean of its divisors is an integer number (92599416).

Almost surely, 2^1245512412 is an apocalyptic number.

1245512412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1245512412 is an abundant number, since it is smaller than the sum of its proper divisors (2088066564).

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

1245512412 is a wasteful number, since it uses less digits than its factorization.

1245512412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035178 (or 2035173 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1245512412 is about 35291.8179186054. The cubic root of 1245512412 is about 1075.9267039158.

Adding to 1245512412 its reverse (2142155421), we get a palindrome (3387667833).

The spelling of 1245512412 in words is "one billion, two hundred forty-five million, five hundred twelve thousand, four hundred twelve".