1245412712440 has 64 divisors (see below), whose sum is σ = 3195244402560. Its totient is φ = 432795002880.

The previous prime is 1245412712429. The next prime is 1245412712471. The reversal of 1245412712440 is 442172145421.

It is a self number, because there is not a number n which added to its sum of digits gives 1245412712440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70433056 + ... + 70450735.

It is an arithmetic number, because the mean of its divisors is an integer number (49925693790).

Almost surely, 2^{1245412712440} is an apocalyptic number.

1245412712440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245412712440 is an abundant number, since it is smaller than the sum of its proper divisors (1949831690120).

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

1245412712440 is a wasteful number, since it uses less digits than its factorization.

1245412712440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140883832 (or 140883828 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 37.

Adding to 1245412712440 its reverse (442172145421), we get a palindrome (1687584857861).

The spelling of 1245412712440 in words is "one trillion, two hundred forty-five billion, four hundred twelve million, seven hundred twelve thousand, four hundred forty".