42857836 has 24 divisors (see below), whose sum is σ = 87171840. Its totient is φ = 18055632.

The previous prime is 42857821. The next prime is 42857869. The reversal of 42857836 is 63875824.

It is a junction number, because it is equal to n+sod(n) for n = 42857792 and 42857801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11320 + ... + 14623.

It is an arithmetic number, because the mean of its divisors is an integer number (3632160).

Almost surely, 2^42857836 is an apocalyptic number.

It is an amenable number.

42857836 is an abundant number, since it is smaller than the sum of its proper divisors (44314004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42857836 is a wasteful number, since it uses less digits than its factorization.

42857836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26013 (or 26011 counting only the distinct ones).

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

The square root of 42857836 is about 6546.5896465259. The cubic root of 42857836 is about 349.9532890043.

It can be divided in two parts, 4285 and 7836, that added together give a palindrome (12121).

The spelling of 42857836 in words is "forty-two million, eight hundred fifty-seven thousand, eight hundred thirty-six".