42686208569429 has 4 divisors (see below), whose sum is σ = 42689377801740. Its totient is φ = 42683039337120.

The previous prime is 42686208569297. The next prime is 42686208569467. The reversal of 42686208569429 is 92496580268624.

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 34346808178225 + 8339400391204 = 5860615^2 + 2887802^2 .

It is a cyclic number.

It is not a de Polignac number, because 42686208569429 - 2¹² = 42686208565333 is a prime.

It is a super-3 number, since 3×42686208569429³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42686208599429) 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, 1584595952 + ... + 1584622889.

It is an arithmetic number, because the mean of its divisors is an integer number (10672344450435).

Almost surely, 2^{42686208569429} is an apocalyptic number.

It is an amenable number.

42686208569429 is a deficient number, since it is larger than the sum of its proper divisors (3169232311).

42686208569429 is a wasteful number, since it uses less digits than its factorization.

42686208569429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169232310.

The product of its (nonzero) digits is 716636160, while the sum is 71.

The spelling of 42686208569429 in words is "forty-two trillion, six hundred eighty-six billion, two hundred eight million, five hundred sixty-nine thousand, four hundred twenty-nine".