42620533 has 4 divisors (see below), whose sum is σ = 43424748. Its totient is φ = 41816320.

The previous prime is 42620531. The next prime is 42620537. The reversal of 42620533 is 33502624.

It is a happy number.

42620533 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 37859409 + 4761124 = 6153^2 + 2182^2 .

It is a cyclic number.

It is not a de Polignac number, because 42620533 - 2¹ = 42620531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42620498 and 42620507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42620531) 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, 402028 + ... + 402133.

It is an arithmetic number, because the mean of its divisors is an integer number (10856187).

Almost surely, 2^42620533 is an apocalyptic number.

It is an amenable number.

42620533 is a deficient number, since it is larger than the sum of its proper divisors (804215).

42620533 is an equidigital number, since it uses as much as digits as its factorization.

42620533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804214.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 42620533 is about 6528.4403190961. The cubic root of 42620533 is about 349.3061983816.

The spelling of 42620533 in words is "forty-two million, six hundred twenty thousand, five hundred thirty-three".