42153843 has 8 divisors (see below), whose sum is σ = 56376256. Its totient is φ = 28017000.

The previous prime is 42153833. The next prime is 42153851. The reversal of 42153843 is 34835124.

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

It is not a de Polignac number, because 42153843 - 2¹³ = 42145651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42153843.

It is not an unprimeable number, because it can be changed into a prime (42153833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20233 + ... + 22218.

It is an arithmetic number, because the mean of its divisors is an integer number (7047032).

Almost surely, 2^42153843 is an apocalyptic number.

42153843 is a deficient number, since it is larger than the sum of its proper divisors (14222413).

42153843 is a wasteful number, since it uses less digits than its factorization.

42153843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42785.

The product of its digits is 11520, while the sum is 30.

The square root of 42153843 is about 6492.5990943535. The cubic root of 42153843 is about 348.0265619176.

Adding to 42153843 its reverse (34835124), we get a palindrome (76988967).

The spelling of 42153843 in words is "forty-two million, one hundred fifty-three thousand, eight hundred forty-three".