17420539 has 2 divisors, whose sum is σ = 17420540. Its totient is φ = 17420538.

The previous prime is 17420519. The next prime is 17420567. The reversal of 17420539 is 93502471.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17420539 - 2¹¹ = 17418491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17420539.

It is not a weakly prime, because it can be changed into another prime (17420519) 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 as a sum of consecutive naturals, namely, 8710269 + 8710270.

It is an arithmetic number, because the mean of its divisors is an integer number (8710270).

Almost surely, 2^17420539 is an apocalyptic number.

17420539 is a deficient number, since it is larger than the sum of its proper divisors (1).

17420539 is an equidigital number, since it uses as much as digits as its factorization.

17420539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 17420539 is about 4173.7919210234. The cubic root of 17420539 is about 259.2311557184.

The spelling of 17420539 in words is "seventeen million, four hundred twenty thousand, five hundred thirty-nine".