42561673 has 8 divisors (see below), whose sum is σ = 53064000. Its totient is φ = 33164880.

The previous prime is 42561671. The next prime is 42561677. The reversal of 42561673 is 37616524.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42561673 - 2¹ = 42561671 is a prime.

It is a super-2 number, since 2×42561673² = 3622992017117858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42561671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276298 + ... + 276451.

It is an arithmetic number, because the mean of its divisors is an integer number (6633000).

Almost surely, 2^42561673 is an apocalyptic number.

It is an amenable number.

42561673 is a deficient number, since it is larger than the sum of its proper divisors (10502327).

42561673 is a wasteful number, since it uses less digits than its factorization.

42561673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552767.

The product of its digits is 30240, while the sum is 34.

The square root of 42561673 is about 6523.9307936243. The cubic root of 42561673 is about 349.1453241632.

It can be divided in two parts, 42561 and 673, that added together give a palindrome (43234).

The spelling of 42561673 in words is "forty-two million, five hundred sixty-one thousand, six hundred seventy-three".