42043044413 has 4 divisors (see below), whose sum is σ = 42135042780. Its totient is φ = 41951046048.

The previous prime is 42043044401. The next prime is 42043044431. The reversal of 42043044413 is 31444034024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36487876324 + 5555168089 = 191018^2 + 74533^2 .

It is a cyclic number.

It is not a de Polignac number, because 42043044413 - 2¹⁴ = 42043028029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42043004413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45998498 + ... + 45999411.

It is an arithmetic number, because the mean of its divisors is an integer number (10533760695).

Almost surely, 2^42043044413 is an apocalyptic number.

It is an amenable number.

42043044413 is a deficient number, since it is larger than the sum of its proper divisors (91998367).

42043044413 is an equidigital number, since it uses as much as digits as its factorization.

42043044413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91998366.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 42043044413 its reverse (31444034024), we get a palindrome (73487078437).

The spelling of 42043044413 in words is "forty-two billion, forty-three million, forty-four thousand, four hundred thirteen".