42831533 has 4 divisors (see below), whose sum is σ = 43989180. Its totient is φ = 41673888.

The previous prime is 42831527. The next prime is 42831539. The reversal of 42831533 is 33513824.

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

It is an interprime number because it is at equal distance from previous prime (42831527) and next prime (42831539).

It can be written as a sum of positive squares in 2 ways, for example, as 31393609 + 11437924 = 5603^2 + 3382^2 .

It is a cyclic number.

It is not a de Polignac number, because 42831533 - 2¹⁰ = 42830509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42831496 and 42831505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42831539) 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, 578768 + ... + 578841.

It is an arithmetic number, because the mean of its divisors is an integer number (10997295).

Almost surely, 2^42831533 is an apocalyptic number.

It is an amenable number.

42831533 is a deficient number, since it is larger than the sum of its proper divisors (1157647).

42831533 is a wasteful number, since it uses less digits than its factorization.

42831533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157646.

The product of its digits is 8640, while the sum is 29.

The square root of 42831533 is about 6544.5804296379. The cubic root of 42831533 is about 349.8816824562.

The spelling of 42831533 in words is "forty-two million, eight hundred thirty-one thousand, five hundred thirty-three".