42556601 has 8 divisors (see below), whose sum is σ = 45938880. Its totient is φ = 39302032.

The previous prime is 42556571. The next prime is 42556603. The reversal of 42556601 is 10665524.

42556601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42556601 - 2¹⁰ = 42555577 is a prime.

It is a super-2 number, since 2×42556601² = 3622128577346402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42556603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31235 + ... + 32568.

It is an arithmetic number, because the mean of its divisors is an integer number (5742360).

Almost surely, 2^42556601 is an apocalyptic number.

It is an amenable number.

42556601 is a deficient number, since it is larger than the sum of its proper divisors (3382279).

42556601 is a wasteful number, since it uses less digits than its factorization.

42556601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63855.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 42556601 is about 6523.5420593417. The cubic root of 42556601 is about 349.1314546001.

The spelling of 42556601 in words is "forty-two million, five hundred fifty-six thousand, six hundred one".