42826831 has 2 divisors, whose sum is σ = 42826832. Its totient is φ = 42826830.

The previous prime is 42826829. The next prime is 42826853. The reversal of 42826831 is 13862824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42826831 - 2¹ = 42826829 is a prime.

It is a super-2 number, since 2×42826831² = 3668274907005122, which contains 22 as substring.

Together with 42826829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42826801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21413415 + 21413416.

It is an arithmetic number, because the mean of its divisors is an integer number (21413416).

Almost surely, 2^42826831 is an apocalyptic number.

42826831 is a deficient number, since it is larger than the sum of its proper divisors (1).

42826831 is an equidigital number, since it uses as much as digits as its factorization.

42826831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 42826831 is about 6544.2211912496. The cubic root of 42826831 is about 349.8688787751.

The spelling of 42826831 in words is "forty-two million, eight hundred twenty-six thousand, eight hundred thirty-one".