42518356 has 12 divisors (see below), whose sum is σ = 74506068. Its totient is φ = 21230912.

The previous prime is 42518351. The next prime is 42518363. The reversal of 42518356 is 65381524.

It can be written as a sum of positive squares in 2 ways, for example, as 16160400 + 26357956 = 4020^2 + 5134^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42518351) 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 3 ways as a sum of consecutive naturals, for example, 3481 + ... + 9856.

It is an arithmetic number, because the mean of its divisors is an integer number (6208839).

Almost surely, 2^42518356 is an apocalyptic number.

It is an amenable number.

42518356 is a deficient number, since it is larger than the sum of its proper divisors (31987712).

42518356 is a wasteful number, since it uses less digits than its factorization.

42518356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14138 (or 14136 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 42518356 is about 6520.6100941553. The cubic root of 42518356 is about 349.0268367964.

It can be divided in two parts, 425 and 18356, that added together give a palindrome (18781).

The spelling of 42518356 in words is "forty-two million, five hundred eighteen thousand, three hundred fifty-six".