42686510437 has 4 divisors (see below), whose sum is σ = 42695898700. Its totient is φ = 42677122176.

The previous prime is 42686510393. The next prime is 42686510453. The reversal of 42686510437 is 73401568624.

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 33362483716 + 9324026721 = 182654^2 + 96561^2 .

It is a cyclic number.

It is not a de Polignac number, because 42686510437 - 2⁷ = 42686510309 is a prime.

It is a super-3 number, since 3×42686510437³ (a number of 33 digits) contains 333 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 (42686513437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4687308 + ... + 4696405.

It is an arithmetic number, because the mean of its divisors is an integer number (10673974675).

Almost surely, 2^42686510437 is an apocalyptic number.

It is an amenable number.

42686510437 is a deficient number, since it is larger than the sum of its proper divisors (9388263).

42686510437 is an equidigital number, since it uses as much as digits as its factorization.

42686510437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9388262.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 42686510437 in words is "forty-two billion, six hundred eighty-six million, five hundred ten thousand, four hundred thirty-seven".