42306340 has 12 divisors (see below), whose sum is σ = 88843356. Its totient is φ = 16922528.

The previous prime is 42306307. The next prime is 42306343. The reversal of 42306340 is 4360324.

It can be written as a sum of positive squares in 2 ways, for example, as 18335524 + 23970816 = 4282^2 + 4896^2 .

It is not an unprimeable number, because it can be changed into a prime (42306343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057639 + ... + 1057678.

It is an arithmetic number, because the mean of its divisors is an integer number (7403613).

Almost surely, 2^42306340 is an apocalyptic number.

It is an amenable number.

42306340 is an abundant number, since it is smaller than the sum of its proper divisors (46537016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42306340 is a wasteful number, since it uses less digits than its factorization.

42306340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115326 (or 2115324 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 42306340 is about 6504.3324023300. The cubic root of 42306340 is about 348.4457339445.

Adding to 42306340 its reverse (4360324), we get a palindrome (46666664).

The spelling of 42306340 in words is "forty-two million, three hundred six thousand, three hundred forty".