42025601 has 4 divisors (see below), whose sum is σ = 42182100. Its totient is φ = 41869104.

The previous prime is 42025583. The next prime is 42025631. The reversal of 42025601 is 10652024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1893376 + 40132225 = 1376^2 + 6335^2 .

It is a cyclic number.

It is not a de Polignac number, because 42025601 - 2¹⁸ = 41763457 is a prime.

It is a super-2 number, since 2×42025601² = 3532302278822402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42025631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77846 + ... + 78383.

It is an arithmetic number, because the mean of its divisors is an integer number (10545525).

Almost surely, 2^42025601 is an apocalyptic number.

It is an amenable number.

42025601 is a deficient number, since it is larger than the sum of its proper divisors (156499).

42025601 is a wasteful number, since it uses less digits than its factorization.

42025601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156498.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 42025601 is about 6482.7155575422. The cubic root of 42025601 is about 347.6732769355.

Adding to 42025601 its reverse (10652024), we get a palindrome (52677625).

The spelling of 42025601 in words is "forty-two million, twenty-five thousand, six hundred one".