42018533 has 2 divisors, whose sum is σ = 42018534. Its totient is φ = 42018532.

The previous prime is 42018527. The next prime is 42018551. The reversal of 42018533 is 33581024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42016324 + 2209 = 6482^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 42018533 - 2¹² = 42014437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42018503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21009266 + 21009267.

It is an arithmetic number, because the mean of its divisors is an integer number (21009267).

Almost surely, 2^42018533 is an apocalyptic number.

It is an amenable number.

42018533 is a deficient number, since it is larger than the sum of its proper divisors (1).

42018533 is an equidigital number, since it uses as much as digits as its factorization.

42018533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42018533 is about 6482.1703927003. The cubic root of 42018533 is about 347.6537849082.

Adding to 42018533 its reverse (33581024), we get a palindrome (75599557).

The spelling of 42018533 in words is "forty-two million, eighteen thousand, five hundred thirty-three".