42826691 has 4 divisors (see below), whose sum is σ = 43413432. Its totient is φ = 42239952.

The previous prime is 42826681. The next prime is 42826699. The reversal of 42826691 is 19662824.

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

It is a cyclic number.

It is not a de Polignac number, because 42826691 - 2¹⁴ = 42810307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42826699) 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, 293261 + ... + 293406.

It is an arithmetic number, because the mean of its divisors is an integer number (10853358).

Almost surely, 2^42826691 is an apocalyptic number.

42826691 is a deficient number, since it is larger than the sum of its proper divisors (586741).

42826691 is an equidigital number, since it uses as much as digits as its factorization.

42826691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586740.

The product of its digits is 41472, while the sum is 38.

The square root of 42826691 is about 6544.2104947809. The cubic root of 42826691 is about 349.8684975367.

The spelling of 42826691 in words is "forty-two million, eight hundred twenty-six thousand, six hundred ninety-one".