42656770 has 16 divisors (see below), whose sum is σ = 82688760. Its totient is φ = 15750144.

The previous prime is 42656753. The next prime is 42656773. The reversal of 42656770 is 7765624.

It can be written as a sum of positive squares in 4 ways, for example, as 15689521 + 26967249 = 3961^2 + 5193^2 .

It is not an unprimeable number, because it can be changed into a prime (42656773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163935 + ... + 164194.

Almost surely, 2^42656770 is an apocalyptic number.

42656770 is a deficient number, since it is larger than the sum of its proper divisors (40031990).

42656770 is a wasteful number, since it uses less digits than its factorization.

42656770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328149.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 42656770 is about 6531.2150477534. The cubic root of 42656770 is about 349.4051665095.

The spelling of 42656770 in words is "forty-two million, six hundred fifty-six thousand, seven hundred seventy".