42161472 has 84 divisors (see below), whose sum is σ = 125370336. Its totient is φ = 14048640.

The previous prime is 42161453. The next prime is 42161473. The reversal of 42161472 is 27416124.

42161472 is a `hidden beast` number, since 42 + 1 + 614 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42161473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14197 + ... + 16907.

It is an arithmetic number, because the mean of its divisors is an integer number (1492504).

Almost surely, 2^42161472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42161472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62685168).

42161472 is an abundant number, since it is smaller than the sum of its proper divisors (83208864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42161472 is an equidigital number, since it uses as much as digits as its factorization.

42161472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738 (or 2716 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 42161472 is about 6493.1865828729. The cubic root of 42161472 is about 348.0475559266.

Adding to 42161472 its reverse (27416124), we get a palindrome (69577596).

The spelling of 42161472 in words is "forty-two million, one hundred sixty-one thousand, four hundred seventy-two".