42143655 has 32 divisors (see below), whose sum is σ = 69543936. Its totient is φ = 21780864.

The previous prime is 42143627. The next prime is 42143657. The reversal of 42143655 is 55634124.

42143655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42143655 - 2¹¹ = 42141607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42143657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143689 + ... + 143981.

It is an arithmetic number, because the mean of its divisors is an integer number (2173248).

Almost surely, 2^42143655 is an apocalyptic number.

42143655 is a deficient number, since it is larger than the sum of its proper divisors (27400281).

42143655 is a wasteful number, since it uses less digits than its factorization.

42143655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567.

The product of its digits is 14400, while the sum is 30.

The square root of 42143655 is about 6491.8144613043. The cubic root of 42143655 is about 347.9985219253.

Adding to 42143655 its reverse (55634124), we get a palindrome (97777779).

The spelling of 42143655 in words is "forty-two million, one hundred forty-three thousand, six hundred fifty-five".