1213423542441 has 40 divisors (see below), whose sum is σ = 1977660869184. Its totient is φ = 735322704480.

The previous prime is 1213423542433. The next prime is 1213423542469. The reversal of 1213423542441 is 1442453243121.

1213423542441 is a `hidden beast` number, since 1 + 21 + 3 + 42 + 354 + 244 + 1 = 666.

It is not a de Polignac number, because 1213423542441 - 2³ = 1213423542433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213423542396 and 1213423542405.

It is not an unprimeable number, because it can be changed into a prime (1213493542441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8057551 + ... + 8206763.

Almost surely, 2^{1213423542441} is an apocalyptic number.

1213423542441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1213423542441 is a deficient number, since it is larger than the sum of its proper divisors (764237326743).

1213423542441 is a wasteful number, since it uses less digits than its factorization.

1213423542441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158363 (or 158354 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

Adding to 1213423542441 its reverse (1442453243121), we get a palindrome (2655876785562).

The spelling of 1213423542441 in words is "one trillion, two hundred thirteen billion, four hundred twenty-three million, five hundred forty-two thousand, four hundred forty-one".