42255705 has 16 divisors (see below), whose sum is σ = 67751424. Its totient is φ = 22488960.

The previous prime is 42255701. The next prime is 42255749. The reversal of 42255705 is 50755224.

It is not a de Polignac number, because 42255705 - 2² = 42255701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42255701) 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, 5112 + ... + 10518.

It is an arithmetic number, because the mean of its divisors is an integer number (4234464).

Almost surely, 2^42255705 is an apocalyptic number.

It is an amenable number.

42255705 is a deficient number, since it is larger than the sum of its proper divisors (25495719).

42255705 is a wasteful number, since it uses less digits than its factorization.

42255705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5936.

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 42255705 is about 6500.4388313405. The cubic root of 42255705 is about 348.3066642179.

The spelling of 42255705 in words is "forty-two million, two hundred fifty-five thousand, seven hundred five".