1245422013243 has 16 divisors (see below), whose sum is σ = 1714380957696. Its totient is φ = 803380072320.

The previous prime is 1245422013233. The next prime is 1245422013289. The reversal of 1245422013243 is 3423102245421.

It is a happy number.

It is not a de Polignac number, because 1245422013243 - 2²⁶ = 1245354904379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1245422013233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344455 + ... + 1615392.

It is an arithmetic number, because the mean of its divisors is an integer number (107148809856).

Almost surely, 2^{1245422013243} is an apocalyptic number.

1245422013243 is a deficient number, since it is larger than the sum of its proper divisors (468958944453).

1245422013243 is a wasteful number, since it uses less digits than its factorization.

1245422013243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966714.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 1245422013243 its reverse (3423102245421), we get a palindrome (4668524258664).

The spelling of 1245422013243 in words is "one trillion, two hundred forty-five billion, four hundred twenty-two million, thirteen thousand, two hundred forty-three".