42506143 has 8 divisors (see below), whose sum is σ = 43066400. Its totient is φ = 41948928.

The previous prime is 42506119. The next prime is 42506183. The reversal of 42506143 is 34160524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42506143 - 2¹⁷ = 42375071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42506183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41623 + ... + 42631.

It is an arithmetic number, because the mean of its divisors is an integer number (5383300).

Almost surely, 2^42506143 is an apocalyptic number.

42506143 is a deficient number, since it is larger than the sum of its proper divisors (560257).

42506143 is a wasteful number, since it uses less digits than its factorization.

42506143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 42506143 is about 6519.6735347715. The cubic root of 42506143 is about 348.9934153650.

Adding to 42506143 its reverse (34160524), we get a palindrome (76666667).

It can be divided in two parts, 425061 and 43, that added together give a square (425104 = 652²).

The spelling of 42506143 in words is "forty-two million, five hundred six thousand, one hundred forty-three".