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67142012 = 2273536793
BaseRepresentation
bin1000000000010…
…00000101111100
311200100011112012
410000020011330
5114142021022
610355030352
71443461210
oct400100574
9150304465
1067142012
1134999873
121a59b3b8
1310baaa02
148cba940
155d63de2
hex400817c

67142012 has 24 divisors (see below), whose sum is σ = 134684256. Its totient is φ = 28689408.

The previous prime is 67142011. The next prime is 67142041. The reversal of 67142012 is 21024176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67142011) 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, 6488 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (5611844).

Almost surely, 267142012 is an apocalyptic number.

It is an amenable number.

67142012 is an abundant number, since it is smaller than the sum of its proper divisors (67542244).

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

67142012 is a wasteful number, since it uses less digits than its factorization.

67142012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7157 (or 7155 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 67142012 is about 8194.0229435852. The cubic root of 67142012 is about 406.4415670252.

Adding to 67142012 its reverse (21024176), we get a palindrome (88166188).

The spelling of 67142012 in words is "sixty-seven million, one hundred forty-two thousand, twelve".

Divisors: 1 2 4 7 14 28 353 706 1412 2471 4942 6793 9884 13586 27172 47551 95102 190204 2397929 4795858 9591716 16785503 33571006 67142012