42320685 has 16 divisors (see below), whose sum is σ = 73869120. Its totient is φ = 20519040.

The previous prime is 42320683. The next prime is 42320687. The reversal of 42320685 is 58602324.

It is an interprime number because it is at equal distance from previous prime (42320683) and next prime (42320687).

It is not a de Polignac number, because 42320685 - 2¹ = 42320683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42320683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128080 + ... + 128409.

It is an arithmetic number, because the mean of its divisors is an integer number (4616820).

Almost surely, 2^42320685 is an apocalyptic number.

It is an amenable number.

42320685 is a deficient number, since it is larger than the sum of its proper divisors (31548435).

42320685 is a wasteful number, since it uses less digits than its factorization.

42320685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256508.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 42320685 is about 6505.4350354146. The cubic root of 42320685 is about 348.4851125121.

The spelling of 42320685 in words is "forty-two million, three hundred twenty thousand, six hundred eighty-five".