42556801 has 8 divisors (see below), whose sum is σ = 48868544. Its totient is φ = 36303120.

The previous prime is 42556781. The next prime is 42556823. The reversal of 42556801 is 10865524.

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

It is not a de Polignac number, because 42556801 - 2⁹ = 42556289 is a prime.

It is a super-2 number, since 2×42556801² = 3622162622707202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42556841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12930 + ... + 15883.

It is an arithmetic number, because the mean of its divisors is an integer number (6108568).

Almost surely, 2^42556801 is an apocalyptic number.

It is an amenable number.

42556801 is a deficient number, since it is larger than the sum of its proper divisors (6311743).

42556801 is a wasteful number, since it uses less digits than its factorization.

42556801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29031.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 42556801 is about 6523.5573884193. The cubic root of 42556801 is about 349.1320015280.

It can be divided in two parts, 4 and 2556801, that multiplied together give a square (10227204 = 3198²).

The spelling of 42556801 in words is "forty-two million, five hundred fifty-six thousand, eight hundred one".