42251143 has 6 divisors (see below), whose sum is σ = 46441472. Its totient is φ = 38410020.

The previous prime is 42251119. The next prime is 42251149. The reversal of 42251143 is 34115224.

It is not a de Polignac number, because 42251143 - 2⁹ = 42250631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42251149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 174471 + ... + 174712.

Almost surely, 2^42251143 is an apocalyptic number.

42251143 is a deficient number, since it is larger than the sum of its proper divisors (4190329).

42251143 is a wasteful number, since it uses less digits than its factorization.

42251143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349205 (or 349194 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 42251143 is about 6500.0879224823. The cubic root of 42251143 is about 348.2941291674.

Adding to 42251143 its reverse (34115224), we get a palindrome (76366367).

The spelling of 42251143 in words is "forty-two million, two hundred fifty-one thousand, one hundred forty-three".