42550143 has 4 divisors (see below), whose sum is σ = 56733528. Its totient is φ = 28366760.

The previous prime is 42550141. The next prime is 42550147. The reversal of 42550143 is 34105524.

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 42550143 - 2¹ = 42550141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42550141) 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, 7091688 + ... + 7091693.

It is an arithmetic number, because the mean of its divisors is an integer number (14183382).

Almost surely, 2^42550143 is an apocalyptic number.

42550143 is a deficient number, since it is larger than the sum of its proper divisors (14183385).

42550143 is a wasteful number, since it uses less digits than its factorization.

42550143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14183384.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 42550143 is about 6523.0470640645. The cubic root of 42550143 is about 349.1137933761.

Adding to 42550143 its reverse (34105524), we get a palindrome (76655667).

The spelling of 42550143 in words is "forty-two million, five hundred fifty thousand, one hundred forty-three".