42857655 has 64 divisors (see below), whose sum is σ = 75644928. Its totient is φ = 20666880.

The previous prime is 42857653. The next prime is 42857657. The reversal of 42857655 is 55675824.

It is an interprime number because it is at equal distance from previous prime (42857653) and next prime (42857657).

It is not a de Polignac number, because 42857655 - 2¹ = 42857653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42857651) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 808609 + ... + 808661.

It is an arithmetic number, because the mean of its divisors is an integer number (1181952).

Almost surely, 2^42857655 is an apocalyptic number.

42857655 is a deficient number, since it is larger than the sum of its proper divisors (32787273).

42857655 is a wasteful number, since it uses less digits than its factorization.

42857655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176.

The product of its digits is 336000, while the sum is 42.

The square root of 42857655 is about 6546.5758225197. The cubic root of 42857655 is about 349.9527963551.

The spelling of 42857655 in words is "forty-two million, eight hundred fifty-seven thousand, six hundred fifty-five".