42445143 has 24 divisors (see below), whose sum is σ = 68900832. Its totient is φ = 24982848.

The previous prime is 42445093. The next prime is 42445153. The reversal of 42445143 is 34154424.

It is a happy number.

It is not a de Polignac number, because 42445143 - 2¹³ = 42436951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42445153) 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, 5196 + ... + 10577.

It is an arithmetic number, because the mean of its divisors is an integer number (2870868).

Almost surely, 2^42445143 is an apocalyptic number.

42445143 is a deficient number, since it is larger than the sum of its proper divisors (26455689).

42445143 is a wasteful number, since it uses less digits than its factorization.

42445143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15815 (or 15812 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 42445143 is about 6514.9937068274. The cubic root of 42445143 is about 348.8263901727.

Adding to 42445143 its reverse (34154424), we get a palindrome (76599567).

The spelling of 42445143 in words is "forty-two million, four hundred forty-five thousand, one hundred forty-three".