13402240400421 has 12 divisors (see below), whose sum is σ = 19466941366080. Its totient is φ = 8884911698280.

The previous prime is 13402240400383. The next prime is 13402240400449. The reversal of 13402240400421 is 12400404220431.

13402240400421 is a `hidden beast` number, since 1 + 34 + 0 + 224 + 0 + 400 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 13402240400421 - 2²¹ = 13402238303269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402240400491) 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, 4159601245 + ... + 4159604466.

It is an arithmetic number, because the mean of its divisors is an integer number (1622245113840).

Almost surely, 2^{13402240400421} is an apocalyptic number.

It is an amenable number.

13402240400421 is a deficient number, since it is larger than the sum of its proper divisors (6064700965659).

13402240400421 is a wasteful number, since it uses less digits than its factorization.

13402240400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8319205896 (or 8319205893 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 13402240400421 its reverse (12400404220431), we get a palindrome (25802644620852).

The spelling of 13402240400421 in words is "thirteen trillion, four hundred two billion, two hundred forty million, four hundred thousand, four hundred twenty-one".