42646977 has 24 divisors (see below), whose sum is σ = 64069824. Its totient is φ = 27311904.

The previous prime is 42646973. The next prime is 42646993. The reversal of 42646977 is 77964624.

42646977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42646977 - 2² = 42646973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42646973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26868 + ... + 28410.

It is an arithmetic number, because the mean of its divisors is an integer number (2669576).

Almost surely, 2^42646977 is an apocalyptic number.

It is an amenable number.

42646977 is a deficient number, since it is larger than the sum of its proper divisors (21422847).

42646977 is a wasteful number, since it uses less digits than its factorization.

42646977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669 (or 1666 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 42646977 is about 6530.4652973582. The cubic root of 42646977 is about 349.3784260360.

The spelling of 42646977 in words is "forty-two million, six hundred forty-six thousand, nine hundred seventy-seven".