42656705 has 48 divisors (see below), whose sum is σ = 65499840. Its totient is φ = 26425728.

The previous prime is 42656681. The next prime is 42656707. The reversal of 42656705 is 50765624.

It is not a de Polignac number, because 42656705 - 2⁶ = 42656641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42656707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187802 + ... + 188028.

It is an arithmetic number, because the mean of its divisors is an integer number (1364580).

Almost surely, 2^42656705 is an apocalyptic number.

It is an amenable number.

42656705 is a deficient number, since it is larger than the sum of its proper divisors (22843135).

42656705 is a wasteful number, since it uses less digits than its factorization.

42656705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 42656705 is about 6531.2100716483. The cubic root of 42656705 is about 349.4049890359.

The spelling of 42656705 in words is "forty-two million, six hundred fifty-six thousand, seven hundred five".