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505013142 = 23121369389
BaseRepresentation
bin11110000110011…
…110001110010110
31022012021022210110
4132012132032112
52013240410032
6122040103450
715341353344
oct3606361626
91265238713
10505013142
1123a080937
12121164b86
138081bb5a
144b0dc994
152e5087cc
hex1e19e396

505013142 has 16 divisors (see below), whose sum is σ = 1010873520. Its totient is φ = 168196512.

The previous prime is 505013081. The next prime is 505013147. The reversal of 505013142 is 241310505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505013147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27417 + ... + 41972.

It is an arithmetic number, because the mean of its divisors is an integer number (63179595).

Almost surely, 2505013142 is an apocalyptic number.

505013142 is an abundant number, since it is smaller than the sum of its proper divisors (505860378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505013142 is a wasteful number, since it uses less digits than its factorization.

505013142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70607.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 505013142 is about 22472.4974580041. The cubic root of 505013142 is about 796.3443320176.

Adding to 505013142 its reverse (241310505), we get a palindrome (746323647).

The spelling of 505013142 in words is "five hundred five million, thirteen thousand, one hundred forty-two".

Divisors: 1 2 3 6 1213 2426 3639 7278 69389 138778 208167 416334 84168857 168337714 252506571 505013142