12421410234545 has 16 divisors (see below), whose sum is σ = 16078470480912. Its totient is φ = 9157770005760.

The previous prime is 12421410234529. The next prime is 12421410234547. The reversal of 12421410234545 is 54543201412421.

It can be written as a sum of positive squares in 8 ways, for example, as 3242740179121 + 9178670055424 = 1800761^2 + 3029632^2 .

It is not a de Polignac number, because 12421410234545 - 2⁴ = 12421410234529 is a prime.

It is a super-2 number, since 2×12421410234545² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12421410234499 and 12421410234508.

It is not an unprimeable number, because it can be changed into a prime (12421410234547) 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, 155831786 + ... + 155911475.

It is an arithmetic number, because the mean of its divisors is an integer number (1004904405057).

Almost surely, 2^{12421410234545} is an apocalyptic number.

It is an amenable number.

12421410234545 is a deficient number, since it is larger than the sum of its proper divisors (3657060246367).

12421410234545 is a wasteful number, since it uses less digits than its factorization.

12421410234545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311743892.

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 12421410234545 its reverse (54543201412421), we get a palindrome (66964611646966).

The spelling of 12421410234545 in words is "twelve trillion, four hundred twenty-one billion, four hundred ten million, two hundred thirty-four thousand, five hundred forty-five".