42355143 has 24 divisors (see below), whose sum is σ = 67184208. Its totient is φ = 26573184.

The previous prime is 42355141. The next prime is 42355169. The reversal of 42355143 is 34155324.

It is not a de Polignac number, because 42355143 - 2¹ = 42355141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42355141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 996 + ... + 9257.

It is an arithmetic number, because the mean of its divisors is an integer number (2799342).

Almost surely, 2^42355143 is an apocalyptic number.

42355143 is a deficient number, since it is larger than the sum of its proper divisors (24829065).

42355143 is a wasteful number, since it uses less digits than its factorization.

42355143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10285 (or 10273 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 42355143 is about 6508.0828974438. The cubic root of 42355143 is about 348.5796670814.

The spelling of 42355143 in words is "forty-two million, three hundred fifty-five thousand, one hundred forty-three".