42836831 has 4 divisors (see below), whose sum is σ = 43216032. Its totient is φ = 42457632.

The previous prime is 42836819. The next prime is 42836837. The reversal of 42836831 is 13863824.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42836831 is a prime.

It is a super-2 number, since 2×42836831² = 3669988180245122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42836791 and 42836800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42836837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189431 + ... + 189656.

It is an arithmetic number, because the mean of its divisors is an integer number (10804008).

Almost surely, 2^42836831 is an apocalyptic number.

42836831 is a deficient number, since it is larger than the sum of its proper divisors (379201).

42836831 is a wasteful number, since it uses less digits than its factorization.

42836831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379200.

The product of its digits is 27648, while the sum is 35.

The square root of 42836831 is about 6544.9851795096. The cubic root of 42836831 is about 349.8961079398.

The spelling of 42836831 in words is "forty-two million, eight hundred thirty-six thousand, eight hundred thirty-one".