42343985 has 8 divisors (see below), whose sum is σ = 52452096. Its totient is φ = 32782320.

The previous prime is 42343981. The next prime is 42343997. The reversal of 42343985 is 58934324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42343985 - 2² = 42343981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42343981) 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 7 ways as a sum of consecutive naturals, for example, 136439 + ... + 136748.

It is an arithmetic number, because the mean of its divisors is an integer number (6556512).

Almost surely, 2^42343985 is an apocalyptic number.

It is an amenable number.

42343985 is a deficient number, since it is larger than the sum of its proper divisors (10108111).

42343985 is a wasteful number, since it uses less digits than its factorization.

42343985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273223.

The product of its digits is 103680, while the sum is 38.

The square root of 42343985 is about 6507.2255992858. The cubic root of 42343985 is about 348.5490545572.

The spelling of 42343985 in words is "forty-two million, three hundred forty-three thousand, nine hundred eighty-five".