42340985 has 16 divisors (see below), whose sum is σ = 52139136. Its totient is φ = 32997888.

The previous prime is 42340981. The next prime is 42341003. The reversal of 42340985 is 58904324.

It is a cyclic number.

It is not a de Polignac number, because 42340985 - 2² = 42340981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42340981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31844 + ... + 33146.

It is an arithmetic number, because the mean of its divisors is an integer number (3258696).

Almost surely, 2^42340985 is an apocalyptic number.

It is an amenable number.

42340985 is a deficient number, since it is larger than the sum of its proper divisors (9798151).

42340985 is a wasteful number, since it uses less digits than its factorization.

42340985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 42340985 is about 6506.9950822173. The cubic root of 42340985 is about 348.5408229917.

The spelling of 42340985 in words is "forty-two million, three hundred forty thousand, nine hundred eighty-five".