42861773 has 4 divisors (see below), whose sum is σ = 43014588. Its totient is φ = 42708960.

The previous prime is 42861761. The next prime is 42861779. The reversal of 42861773 is 37716824.

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 30492484 + 12369289 = 5522^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 42861773 - 2⁴ = 42861757 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 (42861779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75986 + ... + 76547.

It is an arithmetic number, because the mean of its divisors is an integer number (10753647).

Almost surely, 2^42861773 is an apocalyptic number.

It is an amenable number.

42861773 is a deficient number, since it is larger than the sum of its proper divisors (152815).

42861773 is a wasteful number, since it uses less digits than its factorization.

42861773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152814.

The product of its digits is 56448, while the sum is 38.

The square root of 42861773 is about 6546.8903305310. The cubic root of 42861773 is about 349.9640044615.

It can be divided in two parts, 42861 and 773, that added together give a palindrome (43634).

The spelling of 42861773 in words is "forty-two million, eight hundred sixty-one thousand, seven hundred seventy-three".