42849813 has 8 divisors (see below), whose sum is σ = 57170176. Its totient is φ = 28548000.

The previous prime is 42849803. The next prime is 42849823. The reversal of 42849813 is 31894824.

42849813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42849803) and next prime (42849823).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42849813 - 2⁶ = 42849749 is a prime.

It is a super-2 number, since 2×42849813² = 3672212948269938, 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 (42849803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2193 + ... + 9513.

It is an arithmetic number, because the mean of its divisors is an integer number (7146272).

Almost surely, 2^42849813 is an apocalyptic number.

It is an amenable number.

42849813 is a deficient number, since it is larger than the sum of its proper divisors (14320363).

42849813 is a wasteful number, since it uses less digits than its factorization.

42849813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9275.

The product of its digits is 55296, while the sum is 39.

The square root of 42849813 is about 6545.9768560544. The cubic root of 42849813 is about 349.9314505207.

The spelling of 42849813 in words is "forty-two million, eight hundred forty-nine thousand, eight hundred thirteen".