42665773 has 16 divisors (see below), whose sum is σ = 46566720. Its totient is φ = 38952576.

The previous prime is 42665747. The next prime is 42665803. The reversal of 42665773 is 37756624.

It is a cyclic number.

It is not a de Polignac number, because 42665773 - 2²¹ = 40568621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42665723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96090 + ... + 96532.

It is an arithmetic number, because the mean of its divisors is an integer number (2910420).

Almost surely, 2^42665773 is an apocalyptic number.

It is an amenable number.

42665773 is a deficient number, since it is larger than the sum of its proper divisors (3900947).

42665773 is a wasteful number, since it uses less digits than its factorization.

42665773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 211680, while the sum is 40.

The square root of 42665773 is about 6531.9042399594. The cubic root of 42665773 is about 349.4297462220.

The spelling of 42665773 in words is "forty-two million, six hundred sixty-five thousand, seven hundred seventy-three".