42017653 has 2 divisors, whose sum is σ = 42017654. Its totient is φ = 42017652.

The previous prime is 42017639. The next prime is 42017663. The reversal of 42017653 is 35671024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39652209 + 2365444 = 6297^2 + 1538^2 .

It is a cyclic number.

It is not a de Polignac number, because 42017653 - 2⁹ = 42017141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42017603) 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, 21008826 + 21008827.

It is an arithmetic number, because the mean of its divisors is an integer number (21008827).

Almost surely, 2^42017653 is an apocalyptic number.

It is an amenable number.

42017653 is a deficient number, since it is larger than the sum of its proper divisors (1).

42017653 is an equidigital number, since it uses as much as digits as its factorization.

42017653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 42017653 is about 6482.1025138453. The cubic root of 42017653 is about 347.6513579040.

Adding to 42017653 its reverse (35671024), we get a palindrome (77688677).

The spelling of 42017653 in words is "forty-two million, seventeen thousand, six hundred fifty-three".