42573861 has 24 divisors (see below), whose sum is σ = 67454400. Its totient is φ = 25660800.

The previous prime is 42573857. The next prime is 42573887. The reversal of 42573861 is 16837524.

42573861 is a `hidden beast` number, since 4 + 2 + 573 + 86 + 1 = 666.

It is not a de Polignac number, because 42573861 - 2² = 42573857 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42573841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18621 + ... + 20781.

It is an arithmetic number, because the mean of its divisors is an integer number (2810600).

Almost surely, 2^42573861 is an apocalyptic number.

It is an amenable number.

42573861 is a deficient number, since it is larger than the sum of its proper divisors (24880539).

42573861 is a wasteful number, since it uses less digits than its factorization.

42573861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377 (or 2374 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 42573861 is about 6524.8648261861. The cubic root of 42573861 is about 349.1786481751.

It can be divided in two parts, 42573 and 861, that added together give a palindrome (43434).

The spelling of 42573861 in words is "forty-two million, five hundred seventy-three thousand, eight hundred sixty-one".