42028143 has 4 divisors (see below), whose sum is σ = 56037528. Its totient is φ = 28018760.

The previous prime is 42028123. The next prime is 42028169. The reversal of 42028143 is 34182024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42028143 - 2¹⁶ = 41962607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42028123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7004688 + ... + 7004693.

It is an arithmetic number, because the mean of its divisors is an integer number (14009382).

Almost surely, 2^42028143 is an apocalyptic number.

42028143 is a deficient number, since it is larger than the sum of its proper divisors (14009385).

42028143 is a wasteful number, since it uses less digits than its factorization.

42028143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14009384.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 42028143 is about 6482.9116143906. The cubic root of 42028143 is about 347.6802866917.

The spelling of 42028143 in words is "forty-two million, twenty-eight thousand, one hundred forty-three".