42518533 has 2 divisors, whose sum is σ = 42518534. Its totient is φ = 42518532.

The previous prime is 42518519. The next prime is 42518557. The reversal of 42518533 is 33581524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30835809 + 11682724 = 5553^2 + 3418^2 .

It is a cyclic number.

It is not a de Polignac number, because 42518533 - 2¹³ = 42510341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42518495 and 42518504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42518633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21259266 + 21259267.

It is an arithmetic number, because the mean of its divisors is an integer number (21259267).

Almost surely, 2^42518533 is an apocalyptic number.

It is an amenable number.

42518533 is a deficient number, since it is larger than the sum of its proper divisors (1).

42518533 is an equidigital number, since it uses as much as digits as its factorization.

42518533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 42518533 is about 6520.6236664908. The cubic root of 42518533 is about 349.0273211179.

The spelling of 42518533 in words is "forty-two million, five hundred eighteen thousand, five hundred thirty-three".