42502073 has 4 divisors (see below), whose sum is σ = 42522228. Its totient is φ = 42481920.

The previous prime is 42502067. The next prime is 42502099. The reversal of 42502073 is 37020524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6165289 + 36336784 = 2483^2 + 6028^2 .

It is a cyclic number.

It is not a de Polignac number, because 42502073 - 2¹⁴ = 42485689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42502003) 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, 6488 + ... + 11273.

It is an arithmetic number, because the mean of its divisors is an integer number (10630557).

Almost surely, 2^42502073 is an apocalyptic number.

It is an amenable number.

42502073 is a deficient number, since it is larger than the sum of its proper divisors (20155).

42502073 is a wasteful number, since it uses less digits than its factorization.

42502073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20154.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 42502073 is about 6519.3613951061. The cubic root of 42502073 is about 348.9822762022.

Adding to 42502073 its reverse (37020524), we get a palindrome (79522597).

The spelling of 42502073 in words is "forty-two million, five hundred two thousand, seventy-three".