42197685 has 16 divisors (see below), whose sum is σ = 68662080. Its totient is φ = 22123520.

The previous prime is 42197677. The next prime is 42197719. The reversal of 42197685 is 58679124.

42197685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42197685 - 2³ = 42197677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22956 + ... + 24725.

It is an arithmetic number, because the mean of its divisors is an integer number (4291380).

Almost surely, 2^42197685 is an apocalyptic number.

It is an amenable number.

42197685 is a deficient number, since it is larger than the sum of its proper divisors (26464395).

42197685 is a wasteful number, since it uses less digits than its factorization.

42197685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47748.

The product of its digits is 120960, while the sum is 42.

The square root of 42197685 is about 6495.9745227333. The cubic root of 42197685 is about 348.1471748341.

The spelling of 42197685 in words is "forty-two million, one hundred ninety-seven thousand, six hundred eighty-five".