42260561 has 4 divisors (see below), whose sum is σ = 48297792. Its totient is φ = 36223332.

The previous prime is 42260539. The next prime is 42260563. The reversal of 42260561 is 16506224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42260561 - 2¹⁰ = 42259537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42260561.

It is not an unprimeable number, because it can be changed into a prime (42260563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3018605 + ... + 3018618.

It is an arithmetic number, because the mean of its divisors is an integer number (12074448).

Almost surely, 2^42260561 is an apocalyptic number.

It is an amenable number.

42260561 is a deficient number, since it is larger than the sum of its proper divisors (6037231).

42260561 is an equidigital number, since it uses as much as digits as its factorization.

42260561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6037230.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42260561 is about 6500.8123338549. The cubic root of 42260561 is about 348.3200061037.

Adding to 42260561 its reverse (16506224), we get a palindrome (58766785).

The spelling of 42260561 in words is "forty-two million, two hundred sixty thousand, five hundred sixty-one".