42236340 has 48 divisors (see below), whose sum is σ = 119894208. Its totient is φ = 11107584.

The previous prime is 42236317. The next prime is 42236371. The reversal of 42236340 is 4363224.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42236340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442 + ... + 9201.

It is an arithmetic number, because the mean of its divisors is an integer number (2497796).

Almost surely, 2^42236340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42236340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59947104).

42236340 is an abundant number, since it is smaller than the sum of its proper divisors (77657868).

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

42236340 is a wasteful number, since it uses less digits than its factorization.

42236340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9728 (or 9726 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 42236340 is about 6498.9491458235. The cubic root of 42236340 is about 348.2534486093.

Adding to 42236340 its reverse (4363224), we get a palindrome (46599564).

The spelling of 42236340 in words is "forty-two million, two hundred thirty-six thousand, three hundred forty".