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420575 = 5216823
BaseRepresentation
bin1100110101011011111
3210100220212
41212223133
5101424300
613003035
73401111
oct1465337
9710825
10420575
11267a91
1218347b
1311957c
14ad3b1
1584935
hex66adf

420575 has 6 divisors (see below), whose sum is σ = 521544. Its totient is φ = 336440.

The previous prime is 420571. The next prime is 420593. The reversal of 420575 is 575024.

It is not a de Polignac number, because 420575 - 22 = 420571 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 420575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420571) 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 5 ways as a sum of consecutive naturals, for example, 8387 + ... + 8436.

It is an arithmetic number, because the mean of its divisors is an integer number (86924).

2420575 is an apocalyptic number.

420575 is a deficient number, since it is larger than the sum of its proper divisors (100969).

420575 is a wasteful number, since it uses less digits than its factorization.

420575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16833 (or 16828 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 420575 is about 648.5175402408. The cubic root of 420575 is about 74.9228836978.

Adding to 420575 its reverse (575024), we get a palindrome (995599).

Subtracting 420575 from its reverse (575024), we obtain a square (154449 = 3932).

The spelling of 420575 in words is "four hundred twenty thousand, five hundred seventy-five".

Divisors: 1 5 25 16823 84115 420575