42865238 has 32 divisors (see below), whose sum is σ = 73979136. Its totient is φ = 18472608.

The previous prime is 42865223. The next prime is 42865247. The reversal of 42865238 is 83256824.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24881 + ... + 26547.

It is an arithmetic number, because the mean of its divisors is an integer number (2311848).

Almost surely, 2^42865238 is an apocalyptic number.

42865238 is a deficient number, since it is larger than the sum of its proper divisors (31113898).

42865238 is a wasteful number, since it uses less digits than its factorization.

42865238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748.

The product of its digits is 92160, while the sum is 38.

The square root of 42865238 is about 6547.1549546349. The cubic root of 42865238 is about 349.9734347184.

The spelling of 42865238 in words is "forty-two million, eight hundred sixty-five thousand, two hundred thirty-eight".