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112121443 = 7178391123
BaseRepresentation
bin1101010111011…
…01011001100011
321210222100201001
412223231121203
5212200341233
615043052431
72531005450
oct653553143
9253870631
10112121443
1158320555
1231671117
131a2c8b65
1410c68827
159c9b27d
hex6aed663

112121443 has 16 divisors (see below), whose sum is σ = 135959040. Its totient is φ = 90262656.

The previous prime is 112121437. The next prime is 112121509. The reversal of 112121443 is 344121211.

It is not a de Polignac number, because 112121443 - 213 = 112113251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112121443.

It is not an unprimeable number, because it can be changed into a prime (112121423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99280 + ... + 100402.

It is an arithmetic number, because the mean of its divisors is an integer number (8497440).

Almost surely, 2112121443 is an apocalyptic number.

112121443 is a deficient number, since it is larger than the sum of its proper divisors (23837597).

112121443 is a wasteful number, since it uses less digits than its factorization.

112121443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986.

The product of its digits is 192, while the sum is 19.

The square root of 112121443 is about 10588.7413321886. The cubic root of 112121443 is about 482.2026130611.

Adding to 112121443 its reverse (344121211), we get a palindrome (456242654).

The spelling of 112121443 in words is "one hundred twelve million, one hundred twenty-one thousand, four hundred forty-three".

Divisors: 1 7 17 119 839 1123 5873 7861 14263 19091 99841 133637 942197 6595379 16017349 112121443