42105601 has 4 divisors (see below), whose sum is σ = 42118704. Its totient is φ = 42092500.

The previous prime is 42105599. The next prime is 42105607. The reversal of 42105601 is 10650124.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42105601 - 2¹ = 42105599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42105607) 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, 1926 + ... + 9376.

It is an arithmetic number, because the mean of its divisors is an integer number (10529676).

Almost surely, 2^42105601 is an apocalyptic number.

It is an amenable number.

42105601 is a deficient number, since it is larger than the sum of its proper divisors (13103).

42105601 is an equidigital number, since it uses as much as digits as its factorization.

42105601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13102.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 42105601 is about 6488.8828776608. The cubic root of 42105601 is about 347.8937475637.

Adding to 42105601 its reverse (10650124), we get a palindrome (52755725).

The spelling of 42105601 in words is "forty-two million, one hundred five thousand, six hundred one".