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1442115131 = 13919154319
BaseRepresentation
bin101010111110100…
…1110111000111011
310201111121001001112
41111331032320323
510423140141011
6355033310535
750510530202
oct12575167073
93644531045
101442115131
11680044496
12342b6544b
1319ca05c82
14d9756239
158691358b
hex55f4ee3b

1442115131 has 8 divisors (see below), whose sum is σ = 1460121600. Its totient is φ = 1424217960.

The previous prime is 1442115119. The next prime is 1442115139. The reversal of 1442115131 is 1315112441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1442115131 - 218 = 1441852987 is a prime.

It is a super-2 number, since 2×14421151312 = 4159392102118294322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1442115097 and 1442115106.

It is not an unprimeable number, because it can be changed into a prime (1442115139) 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, 611 + ... + 53708.

It is an arithmetic number, because the mean of its divisors is an integer number (182515200).

Almost surely, 21442115131 is an apocalyptic number.

1442115131 is a deficient number, since it is larger than the sum of its proper divisors (18006469).

1442115131 is a wasteful number, since it uses less digits than its factorization.

1442115131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54649.

The product of its digits is 480, while the sum is 23.

The square root of 1442115131 is about 37975.1909935948. The cubic root of 1442115131 is about 1129.7958570842.

Adding to 1442115131 its reverse (1315112441), we get a palindrome (2757227572).

The spelling of 1442115131 in words is "one billion, four hundred forty-two million, one hundred fifteen thousand, one hundred thirty-one".

Divisors: 1 139 191 26549 54319 7550341 10374929 1442115131