42655977 has 56 divisors (see below), whose sum is σ = 78835904. Its totient is φ = 22464864.

The previous prime is 42655967. The next prime is 42655993. The reversal of 42655977 is 77955624.

42655977 is a `hidden beast` number, since 4 + 26 + 559 + 77 = 666.

It is not a de Polignac number, because 42655977 - 2⁶ = 42655913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42655927) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 66018 + ... + 66660.

It is an arithmetic number, because the mean of its divisors is an integer number (1407784).

Almost surely, 2^42655977 is an apocalyptic number.

It is an amenable number.

42655977 is a deficient number, since it is larger than the sum of its proper divisors (36179927).

42655977 is an equidigital number, since it uses as much as digits as its factorization.

42655977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 666 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 42655977 is about 6531.1543390124. The cubic root of 42655977 is about 349.4030013197.

The spelling of 42655977 in words is "forty-two million, six hundred fifty-five thousand, nine hundred seventy-seven".