1245144415421 has 16 divisors (see below), whose sum is σ = 1277867404800. Its totient is φ = 1212772466880.

The previous prime is 1245144415387. The next prime is 1245144415441.

1245144415421 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1245144415421 - 2⁶ = 1245144415357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245144415441) by changing a digit.

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, 14352986 + ... + 14439476.

It is an arithmetic number, because the mean of its divisors is an integer number (79866712800).

Almost surely, 2^{1245144415421} is an apocalyptic number.

It is an amenable number.

1245144415421 is a deficient number, since it is larger than the sum of its proper divisors (32722989379).

1245144415421 is a wasteful number, since it uses less digits than its factorization.

1245144415421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88516.

The product of its digits is 102400, while the sum is 38.

The spelling of 1245144415421 in words is "one trillion, two hundred forty-five billion, one hundred forty-four million, four hundred fifteen thousand, four hundred twenty-one".