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42007884859801 = 72479219332
BaseRepresentation
bin10011000110100101110010…
…00011100000100110011001
312111201220200201112020112001
421203102321003200212121
521001224122011003201
6225202053401121001
711563653355541200
oct1143227103404631
9174656621466461
1042007884859801
1112426497950813
1248654ab789161
131a5943255a043
14a5329a220237
154ccac504e301
hex2634b90e0999

42007884859801 has 27 divisors (see below), whose sum is σ = 48993891411231. Its totient is φ = 35912999256624.

The previous prime is 42007884859793. The next prime is 42007884859813. The reversal of 42007884859801 is 10895848870024.

The square root of 42007884859801 is 6481349.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 28601478361225 + 13406406498576 = 5348035^2 + 3661476^2 .

It is not a de Polignac number, because 42007884859801 - 23 = 42007884859793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42007884859841) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 21731962231 + ... + 21731964163.

Almost surely, 242007884859801 is an apocalyptic number.

42007884859801 is the 6481349-th square number.

42007884859801 is the 3240675-th centered octagonal number.

It is an amenable number.

42007884859801 is a deficient number, since it is larger than the sum of its proper divisors (6986006551430).

42007884859801 is an frugal number, since it uses more digits than its factorization.

42007884859801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 64.

The spelling of 42007884859801 in words is "forty-two trillion, seven billion, eight hundred eighty-four million, eight hundred fifty-nine thousand, eight hundred one".

Divisors: 1 7 49 479 1933 3353 13531 23471 94717 229441 925907 1606087 3736489 6481349 11242609 26155423 45369443 183087961 443509453 1789778231 3104566171 12528447617 21731963197 87699133319 857303772649 6001126408543 42007884859801