42122442013 has 8 divisors (see below), whose sum is σ = 42398858232. Its totient is φ = 41846128896.

The previous prime is 42122441929. The next prime is 42122442059. The reversal of 42122442013 is 31024422124.

It can be written as a sum of positive squares in 4 ways, for example, as 5026526404 + 37095915609 = 70898^2 + 192603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42122442013 - 2¹⁷ = 42122310941 is a prime.

It is a super-2 number, since 2×42122442013² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42122442613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903081 + ... + 948577.

It is an arithmetic number, because the mean of its divisors is an integer number (5299857279).

Almost surely, 2^42122442013 is an apocalyptic number.

It is an amenable number.

42122442013 is a deficient number, since it is larger than the sum of its proper divisors (276416219).

42122442013 is a wasteful number, since it uses less digits than its factorization.

42122442013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51551.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 42122442013 its reverse (31024422124), we get a palindrome (73146864137).

The spelling of 42122442013 in words is "forty-two billion, one hundred twenty-two million, four hundred forty-two thousand, thirteen".