42056227 has 4 divisors (see below), whose sum is σ = 42428520. Its totient is φ = 41683936.

The previous prime is 42056221. The next prime is 42056263. The reversal of 42056227 is 72265024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42056227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42056195 and 42056204.

It is not an unprimeable number, because it can be changed into a prime (42056221) 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 3 ways as a sum of consecutive naturals, for example, 185977 + ... + 186202.

It is an arithmetic number, because the mean of its divisors is an integer number (10607130).

Almost surely, 2^42056227 is an apocalyptic number.

42056227 is a deficient number, since it is larger than the sum of its proper divisors (372293).

42056227 is a wasteful number, since it uses less digits than its factorization.

42056227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372292.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 42056227 is about 6485.0772547442. The cubic root of 42056227 is about 347.7577116297.

The spelling of 42056227 in words is "forty-two million, fifty-six thousand, two hundred twenty-seven".