42502143 has 4 divisors (see below), whose sum is σ = 56669528. Its totient is φ = 28334760.

The previous prime is 42502127. The next prime is 42502153. The reversal of 42502143 is 34120524.

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

It is not a de Polignac number, because 42502143 - 2⁴ = 42502127 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 (42502123) 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, 7083688 + ... + 7083693.

It is an arithmetic number, because the mean of its divisors is an integer number (14167382).

Almost surely, 2^42502143 is an apocalyptic number.

42502143 is a deficient number, since it is larger than the sum of its proper divisors (14167385).

42502143 is a wasteful number, since it uses less digits than its factorization.

42502143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14167384.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42502143 is about 6519.3667637279. The cubic root of 42502143 is about 348.9824677909.

Adding to 42502143 its reverse (34120524), we get a palindrome (76622667).

The spelling of 42502143 in words is "forty-two million, five hundred two thousand, one hundred forty-three".