42147533 has 4 divisors (see below), whose sum is σ = 42366108. Its totient is φ = 41928960.

The previous prime is 42147509. The next prime is 42147541. The reversal of 42147533 is 33574124.

It is a happy number.

42147533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28590409 + 13557124 = 5347^2 + 3682^2 .

It is a cyclic number.

It is not a de Polignac number, because 42147533 - 2¹⁰ = 42146509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42147496 and 42147505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42147503) 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 3 ways as a sum of consecutive naturals, for example, 108998 + ... + 109383.

It is an arithmetic number, because the mean of its divisors is an integer number (10591527).

Almost surely, 2^42147533 is an apocalyptic number.

It is an amenable number.

42147533 is a deficient number, since it is larger than the sum of its proper divisors (218575).

42147533 is a wasteful number, since it uses less digits than its factorization.

42147533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218574.

The product of its digits is 10080, while the sum is 29.

The square root of 42147533 is about 6492.1131382625. The cubic root of 42147533 is about 348.0091957098.

The spelling of 42147533 in words is "forty-two million, one hundred forty-seven thousand, five hundred thirty-three".