42123285013 has 4 divisors (see below), whose sum is σ = 42165033580. Its totient is φ = 42081536448.

The previous prime is 42123285011. The next prime is 42123285041. The reversal of 42123285013 is 31058232124.

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 21271347409 + 20851937604 = 145847^2 + 144402^2 .

It is a cyclic number.

It is not a de Polignac number, because 42123285013 - 2¹ = 42123285011 is a prime.

It is a super-2 number, since 2×42123285013² (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 (42123285011) 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 3 ways as a sum of consecutive naturals, for example, 20872770 + ... + 20874787.

It is an arithmetic number, because the mean of its divisors is an integer number (10541258395).

Almost surely, 2^42123285013 is an apocalyptic number.

It is an amenable number.

42123285013 is a deficient number, since it is larger than the sum of its proper divisors (41748567).

42123285013 is a wasteful number, since it uses less digits than its factorization.

42123285013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41748566.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 42123285013 in words is "forty-two billion, one hundred twenty-three million, two hundred eighty-five thousand, thirteen".