42865378 has 8 divisors (see below), whose sum is σ = 64452060. Its totient is φ = 21381360.

The previous prime is 42865357. The next prime is 42865379. The reversal of 42865378 is 87356824.

It can be written as a sum of positive squares in 2 ways, for example, as 33907329 + 8958049 = 5823^2 + 2993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42865379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24613 + ... + 26296.

Almost surely, 2^42865378 is an apocalyptic number.

42865378 is a deficient number, since it is larger than the sum of its proper divisors (21586682).

42865378 is a wasteful number, since it uses less digits than its factorization.

42865378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51332.

The product of its digits is 322560, while the sum is 43.

The square root of 42865378 is about 6547.1656462931. The cubic root of 42865378 is about 349.9738157282.

The spelling of 42865378 in words is "forty-two million, eight hundred sixty-five thousand, three hundred seventy-eight".