42841813 has 4 divisors (see below), whose sum is σ = 48962080. Its totient is φ = 36721548.

The previous prime is 42841811. The next prime is 42841849. The reversal of 42841813 is 31814824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42841813 - 2¹ = 42841811 is a prime.

It is a super-2 number, since 2×42841813² = 3670841882253938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42841811) 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, 3060123 + ... + 3060136.

It is an arithmetic number, because the mean of its divisors is an integer number (12240520).

Almost surely, 2^42841813 is an apocalyptic number.

It is an amenable number.

42841813 is a deficient number, since it is larger than the sum of its proper divisors (6120267).

42841813 is an equidigital number, since it uses as much as digits as its factorization.

42841813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120266.

The product of its digits is 6144, while the sum is 31.

The square root of 42841813 is about 6545.3657651807. The cubic root of 42841813 is about 349.9096719282.

The spelling of 42841813 in words is "forty-two million, eight hundred forty-one thousand, eight hundred thirteen".