42603685 has 4 divisors (see below), whose sum is σ = 51124428. Its totient is φ = 34082944.

The previous prime is 42603647. The next prime is 42603707. The reversal of 42603685 is 58630624.

It is a happy number.

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 19554084 + 23049601 = 4422^2 + 4801^2 .

It is a cyclic number.

It is not a de Polignac number, because 42603685 - 2⁷ = 42603557 is a prime.

It is a super-3 number, since 3×42603685³ (a number of 24 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 42603685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4260364 + ... + 4260373.

It is an arithmetic number, because the mean of its divisors is an integer number (12781107).

Almost surely, 2^42603685 is an apocalyptic number.

It is an amenable number.

42603685 is a deficient number, since it is larger than the sum of its proper divisors (8520743).

42603685 is an equidigital number, since it uses as much as digits as its factorization.

42603685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520742.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 42603685 is about 6527.1498374099. The cubic root of 42603685 is about 349.2601651198.

The spelling of 42603685 in words is "forty-two million, six hundred three thousand, six hundred eighty-five".