42345636 has 12 divisors (see below), whose sum is σ = 98806512. Its totient is φ = 14115208.

The previous prime is 42345631. The next prime is 42345679. The reversal of 42345636 is 63654324.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 42345597 and 42345606.

It is not an unprimeable number, because it can be changed into a prime (42345631) 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, 1764390 + ... + 1764413.

It is an arithmetic number, because the mean of its divisors is an integer number (8233876).

Almost surely, 2^42345636 is an apocalyptic number.

It is an amenable number.

42345636 is an abundant number, since it is smaller than the sum of its proper divisors (56460876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42345636 is a wasteful number, since it uses less digits than its factorization.

42345636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528810 (or 3528808 counting only the distinct ones).

The product of its digits is 51840, while the sum is 33.

The square root of 42345636 is about 6507.3524570289. The cubic root of 42345636 is about 348.5535844962.

It can be divided in two parts, 4234 and 5636, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 42345636 in words is "forty-two million, three hundred forty-five thousand, six hundred thirty-six".