42561461 has 8 divisors (see below), whose sum is σ = 43559424. Its totient is φ = 41567440.

The previous prime is 42561413. The next prime is 42561503. The reversal of 42561461 is 16416524.

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

It is a cyclic number.

It is not a de Polignac number, because 42561461 - 2⁶ = 42561397 is a prime.

It is a super-2 number, since 2×42561461² = 3622955924909042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42561401) 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, 38036 + ... + 39138.

It is an arithmetic number, because the mean of its divisors is an integer number (5444928).

Almost surely, 2^42561461 is an apocalyptic number.

It is an amenable number.

42561461 is a deficient number, since it is larger than the sum of its proper divisors (997963).

42561461 is a wasteful number, since it uses less digits than its factorization.

42561461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971.

The product of its digits is 5760, while the sum is 29.

The square root of 42561461 is about 6523.9145457310. The cubic root of 42561461 is about 349.1447444638.

Adding to 42561461 its reverse (16416524), we get a palindrome (58977985).

The spelling of 42561461 in words is "forty-two million, five hundred sixty-one thousand, four hundred sixty-one".