42132561 has 8 divisors (see below), whose sum is σ = 57483360. Its totient is φ = 27435072.

The previous prime is 42132553. The next prime is 42132577. The reversal of 42132561 is 16523124.

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

It is not a de Polignac number, because 42132561 - 2³ = 42132553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42132161) 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, 163176 + ... + 163433.

It is an arithmetic number, because the mean of its divisors is an integer number (7185420).

Almost surely, 2^42132561 is an apocalyptic number.

It is an amenable number.

42132561 is a deficient number, since it is larger than the sum of its proper divisors (15350799).

42132561 is a wasteful number, since it uses less digits than its factorization.

42132561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326655.

The product of its digits is 1440, while the sum is 24.

The square root of 42132561 is about 6490.9599444150. The cubic root of 42132561 is about 347.9679832482.

Adding to 42132561 its reverse (16523124), we get a palindrome (58655685).

The spelling of 42132561 in words is "forty-two million, one hundred thirty-two thousand, five hundred sixty-one".