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12042220302 = 23274278639
BaseRepresentation
bin10110011011100010…
…11011001100001110
31011002020120011201100
423031301123030032
5144130302022202
65310534323530
7604263120000
oct131561331416
934066504640
1012042220302
11511a579392
122400ab95a6
13119bb27b58
1482348c370
154a731041c
hex2cdc5b30e

12042220302 has 60 divisors (see below), whose sum is σ = 30438354960. Its totient is φ = 3440622024.

The previous prime is 12042220247. The next prime is 12042220303. The reversal of 12042220302 is 20302224021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042220303) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 96102 + ... + 182537.

It is an arithmetic number, because the mean of its divisors is an integer number (507305916).

Almost surely, 212042220302 is an apocalyptic number.

12042220302 is an abundant number, since it is smaller than the sum of its proper divisors (18396134658).

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

12042220302 is an equidigital number, since it uses as much as digits as its factorization.

12042220302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278675 (or 278651 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 12042220302 its reverse (20302224021), we get a palindrome (32344444323).

The spelling of 12042220302 in words is "twelve billion, forty-two million, two hundred twenty thousand, three hundred two".

Divisors: 1 2 3 6 7 9 14 18 21 42 49 63 98 126 147 294 343 441 686 882 1029 2058 2401 3087 4802 6174 7203 14406 21609 43218 278639 557278 835917 1671834 1950473 2507751 3900946 5015502 5851419 11702838 13653311 17554257 27306622 35108514 40959933 81919866 95573177 122879799 191146354 245759598 286719531 573439062 669012239 860158593 1338024478 1720317186 2007036717 4014073434 6021110151 12042220302