42473861 has 4 divisors (see below), whose sum is σ = 42516012. Its totient is φ = 42431712.

The previous prime is 42473857. The next prime is 42473863. The reversal of 42473861 is 16837424.

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 36372961 + 6100900 = 6031^2 + 2470^2 .

It is a cyclic number.

It is not a de Polignac number, because 42473861 - 2² = 42473857 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 (42473863) 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, 19526 + ... + 21591.

It is an arithmetic number, because the mean of its divisors is an integer number (10629003).

Almost surely, 2^42473861 is an apocalyptic number.

It is an amenable number.

42473861 is a deficient number, since it is larger than the sum of its proper divisors (42151).

42473861 is a wasteful number, since it uses less digits than its factorization.

42473861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42150.

The product of its digits is 32256, while the sum is 35.

The square root of 42473861 is about 6517.1973270724. The cubic root of 42473861 is about 348.9050433639.

It can be divided in two parts, 42473 and 861, that added together give a palindrome (43334).

The spelling of 42473861 in words is "forty-two million, four hundred seventy-three thousand, eight hundred sixty-one".