42868836 has 36 divisors (see below), whose sum is σ = 109676112. Its totient is φ = 14116464.

The previous prime is 42868831. The next prime is 42868843. The reversal of 42868836 is 63886824.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 42868791 and 42868800.

It is not an unprimeable number, because it can be changed into a prime (42868831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4186 + ... + 10161.

Almost surely, 2^42868836 is an apocalyptic number.

It is an amenable number.

42868836 is an abundant number, since it is smaller than the sum of its proper divisors (66807276).

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

42868836 is a wasteful number, since it uses less digits than its factorization.

42868836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14440 (or 14435 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 42868836 is about 6547.4297247088. The cubic root of 42868836 is about 349.9832264070.

The spelling of 42868836 in words is "forty-two million, eight hundred sixty-eight thousand, eight hundred thirty-six".