42353540 has 12 divisors (see below), whose sum is σ = 88942476. Its totient is φ = 16941408.

The previous prime is 42353539. The next prime is 42353561. The reversal of 42353540 is 4535324.

It can be written as a sum of positive squares in 2 ways, for example, as 21977344 + 20376196 = 4688^2 + 4514^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058819 + ... + 1058858.

It is an arithmetic number, because the mean of its divisors is an integer number (7411873).

Almost surely, 2^42353540 is an apocalyptic number.

It is an amenable number.

42353540 is an abundant number, since it is smaller than the sum of its proper divisors (46588936).

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

42353540 is a wasteful number, since it uses less digits than its factorization.

42353540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117686 (or 2117684 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 42353540 is about 6507.9597417317. The cubic root of 42353540 is about 348.5752695025.

Adding to 42353540 its reverse (4535324), we get a palindrome (46888864).

The spelling of 42353540 in words is "forty-two million, three hundred fifty-three thousand, five hundred forty".