42141561 has 16 divisors (see below), whose sum is σ = 70053888. Its totient is φ = 21891600.

The previous prime is 42141529. The next prime is 42141569. The reversal of 42141561 is 16514124.

It is a happy number.

It is not a de Polignac number, because 42141561 - 2⁵ = 42141529 is a prime.

It is a super-2 number, since 2×42141561² = 3551822327033442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42141569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90985 + ... + 91446.

It is an arithmetic number, because the mean of its divisors is an integer number (4378368).

Almost surely, 2^42141561 is an apocalyptic number.

It is an amenable number.

42141561 is a deficient number, since it is larger than the sum of its proper divisors (27912327).

42141561 is a wasteful number, since it uses less digits than its factorization.

42141561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182452.

The product of its digits is 960, while the sum is 24.

The square root of 42141561 is about 6491.6531792757. The cubic root of 42141561 is about 347.9927581397.

Adding to 42141561 its reverse (16514124), we get a palindrome (58655685).

It can be divided in two parts, 4214 and 1561, that added together give a palindrome (5775).

The spelling of 42141561 in words is "forty-two million, one hundred forty-one thousand, five hundred sixty-one".