42655601 has 8 divisors (see below), whose sum is σ = 45366120. Its totient is φ = 39967488.

The previous prime is 42655577. The next prime is 42655603. The reversal of 42655601 is 10655624.

It can be written as a sum of positive squares in 4 ways, for example, as 24601600 + 18054001 = 4960^2 + 4249^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42655601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42655603) 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, 1586 + ... + 9371.

It is an arithmetic number, because the mean of its divisors is an integer number (5670765).

Almost surely, 2^42655601 is an apocalyptic number.

It is an amenable number.

42655601 is a deficient number, since it is larger than the sum of its proper divisors (2710519).

42655601 is a wasteful number, since it uses less digits than its factorization.

42655601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11203.

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

The square root of 42655601 is about 6531.1255538383. The cubic root of 42655601 is about 349.4019746881.

The spelling of 42655601 in words is "forty-two million, six hundred fifty-five thousand, six hundred one".