113540120102421 has 8 divisors (see below), whose sum is σ = 168207585336960. Its totient is φ = 75693413401596.

The previous prime is 113540120102419. The next prime is 113540120102429. The reversal of 113540120102421 is 124201021045311.

113540120102421 is a `hidden beast` number, since 1 + 1 + 3 + 5 + 401 + 2 + 0 + 10 + 242 + 1 = 666.

It is not a de Polignac number, because 113540120102421 - 2¹ = 113540120102419 is a prime.

It is a super-2 number, since 2×113540120102421² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4205189633423 = 113540120102421 / (1 + 1 + 3 + 5 + 4 + 0 + 1 + 2 + 0 + 1 + 0 + 2 + 4 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113540120102429) 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 7 ways as a sum of consecutive naturals, for example, 2102594816685 + ... + 2102594816738.

It is an arithmetic number, because the mean of its divisors is an integer number (21025948167120).

Almost surely, 2^{113540120102421} is an apocalyptic number.

It is an amenable number.

113540120102421 is a deficient number, since it is larger than the sum of its proper divisors (54667465234539).

113540120102421 is an equidigital number, since it uses as much as digits as its factorization.

113540120102421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205189633432 (or 4205189633426 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 113540120102421 its reverse (124201021045311), we get a palindrome (237741141147732).

The spelling of 113540120102421 in words is "one hundred thirteen trillion, five hundred forty billion, one hundred twenty million, one hundred two thousand, four hundred twenty-one".