53440342 has 8 divisors (see below), whose sum is σ = 82746432. Its totient is φ = 25858200.

The previous prime is 53440337. The next prime is 53440391. The reversal of 53440342 is 24304435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430909 + ... + 431032.

It is an arithmetic number, because the mean of its divisors is an integer number (10343304).

Almost surely, 2^53440342 is an apocalyptic number.

53440342 is a deficient number, since it is larger than the sum of its proper divisors (29306090).

53440342 is a wasteful number, since it uses less digits than its factorization.

53440342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861974.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 53440342 is about 7310.2901447207. The cubic root of 53440342 is about 376.6659908969.

Adding to 53440342 its reverse (24304435), we get a palindrome (77744777).

The spelling of 53440342 in words is "fifty-three million, four hundred forty thousand, three hundred forty-two".