42866938 has 4 divisors (see below), whose sum is σ = 64300410. Its totient is φ = 21433468.

The previous prime is 42866933. The next prime is 42866951. The reversal of 42866938 is 83966824.

It is a happy number.

42866938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 2455489 = 6357^2 + 1567^2 .

It is not an unprimeable number, because it can be changed into a prime (42866933) 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 as a sum of consecutive naturals, namely, 10716733 + ... + 10716736.

Almost surely, 2^42866938 is an apocalyptic number.

42866938 is a deficient number, since it is larger than the sum of its proper divisors (21433472).

42866938 is a wasteful number, since it uses less digits than its factorization.

42866938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21433471.

The product of its digits is 497664, while the sum is 46.

The square root of 42866938 is about 6547.2847807316. The cubic root of 42866938 is about 349.9780612099.

The spelling of 42866938 in words is "forty-two million, eight hundred sixty-six thousand, nine hundred thirty-eight".