42861655 has 4 divisors (see below), whose sum is σ = 51433992. Its totient is φ = 34289320.

The previous prime is 42861649. The next prime is 42861659. The reversal of 42861655 is 55616824.

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

It is not a de Polignac number, because 42861655 - 2³ = 42861647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42861659) 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, 4286161 + ... + 4286170.

It is an arithmetic number, because the mean of its divisors is an integer number (12858498).

Almost surely, 2^42861655 is an apocalyptic number.

42861655 is a deficient number, since it is larger than the sum of its proper divisors (8572337).

42861655 is an equidigital number, since it uses as much as digits as its factorization.

42861655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8572336.

The product of its digits is 57600, while the sum is 37.

The square root of 42861655 is about 6546.8813186127. The cubic root of 42861655 is about 349.9636833067.

The spelling of 42861655 in words is "forty-two million, eight hundred sixty-one thousand, six hundred fifty-five".