42686039236 has 27 divisors (see below), whose sum is σ = 78853607469. Its totient is φ = 20215983888.

The previous prime is 42686039219. The next prime is 42686039237. The reversal of 42686039236 is 63293068624.

The square root of 42686039236 is 206606.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24096352900 + 18589686336 = 155230^2 + 136344^2 .

It is a super-3 number, since 3×42686039236³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42686039236.

It is not an unprimeable number, because it can be changed into a prime (42686039237) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7848310 + ... + 7853746.

Almost surely, 2^42686039236 is an apocalyptic number.

42686039236 is the 206606-th square number.

It is an amenable number.

42686039236 is a deficient number, since it is larger than the sum of its proper divisors (36167568233).

42686039236 is an frugal number, since it uses more digits than its factorization.

42686039236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916 (or 5458 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 49.

Multiplying 42686039236 by its sum of digits (49), we get a square (2091615922564 = 1446242²).

The spelling of 42686039236 in words is "forty-two billion, six hundred eighty-six million, thirty-nine thousand, two hundred thirty-six".