42113134024421 has 2 divisors, whose sum is σ = 42113134024422. Its totient is φ = 42113134024420.

The previous prime is 42113134024399. The next prime is 42113134024573. The reversal of 42113134024421 is 12442043131124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30603134640100 + 11509999384321 = 5532010^2 + 3392639^2 .

It is a cyclic number.

It is not a de Polignac number, because 42113134024421 - 2¹⁸ = 42113133762277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42113134024021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21056567012210 + 21056567012211.

It is an arithmetic number, because the mean of its divisors is an integer number (21056567012211).

Almost surely, 2^{42113134024421} is an apocalyptic number.

It is an amenable number.

42113134024421 is a deficient number, since it is larger than the sum of its proper divisors (1).

42113134024421 is an equidigital number, since it uses as much as digits as its factorization.

42113134024421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 42113134024421 its reverse (12442043131124), we get a palindrome (54555177155545).

The spelling of 42113134024421 in words is "forty-two trillion, one hundred thirteen billion, one hundred thirty-four million, twenty-four thousand, four hundred twenty-one".