42851655 has 96 divisors (see below), whose sum is σ = 94348800. Its totient is φ = 17475840.

The previous prime is 42851629. The next prime is 42851663. The reversal of 42851655 is 55615824.

It is not a de Polignac number, because 42851655 - 2⁷ = 42851527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 287521 + ... + 287669.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 2^42851655 is an apocalyptic number.

42851655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42851655 is an abundant number, since it is smaller than the sum of its proper divisors (51497145).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42851655 is a wasteful number, since it uses less digits than its factorization.

42851655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 258 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 42851655 is about 6546.1175516485. The cubic root of 42851655 is about 349.9364646576.

The spelling of 42851655 in words is "forty-two million, eight hundred fifty-one thousand, six hundred fifty-five".