42256655 has 16 divisors (see below), whose sum is σ = 58252800. Its totient is φ = 28825632.

The previous prime is 42256633. The next prime is 42256657. The reversal of 42256655 is 55665224.

It is a cyclic number.

It is not a de Polignac number, because 42256655 - 2¹⁴ = 42240271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42256657) 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 15 ways as a sum of consecutive naturals, for example, 3932 + ... + 9998.

It is an arithmetic number, because the mean of its divisors is an integer number (3640800).

Almost surely, 2^42256655 is an apocalyptic number.

42256655 is a deficient number, since it is larger than the sum of its proper divisors (15996145).

42256655 is a wasteful number, since it uses less digits than its factorization.

42256655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278.

The product of its digits is 72000, while the sum is 35.

The square root of 42256655 is about 6500.5119029196. The cubic root of 42256655 is about 348.3092744284.

The spelling of 42256655 in words is "forty-two million, two hundred fifty-six thousand, six hundred fifty-five".