42397236 has 48 divisors (see below), whose sum is σ = 125623680. Its totient is φ = 12113280.

The previous prime is 42397231. The next prime is 42397237. The reversal of 42397236 is 63279324.

It is a happy number.

42397236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 42397236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42397231) by changing a digit.

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, 27285 + ... + 28796.

It is an arithmetic number, because the mean of its divisors is an integer number (2617160).

Almost surely, 2^42397236 is an apocalyptic number.

It is an amenable number.

42397236 is an abundant number, since it is smaller than the sum of its proper divisors (83226444).

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

42397236 is a wasteful number, since it uses less digits than its factorization.

42397236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56101 (or 56093 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 42397236 is about 6511.3159960180. The cubic root of 42397236 is about 348.6951029326.

The spelling of 42397236 in words is "forty-two million, three hundred ninety-seven thousand, two hundred thirty-six".