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145105135 = 574145861
BaseRepresentation
bin10001010011000…
…10000011101111
3101010001002211021
420221202003233
5244121331020
622222035011
73411242020
oct1051420357
9333032737
10145105135
11749a96aa
1240718a67
13240a6c36
14153b2c47
15cb141aa
hex8a620ef

145105135 has 8 divisors (see below), whose sum is σ = 199001376. Its totient is φ = 99500640.

The previous prime is 145105133. The next prime is 145105151. The reversal of 145105135 is 531501541.

It is a happy number.

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

It is not a de Polignac number, because 145105135 - 21 = 145105133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145105133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2072896 + ... + 2072965.

It is an arithmetic number, because the mean of its divisors is an integer number (24875172).

Almost surely, 2145105135 is an apocalyptic number.

145105135 is a deficient number, since it is larger than the sum of its proper divisors (53896241).

145105135 is an equidigital number, since it uses as much as digits as its factorization.

145105135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145873.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 145105135 is about 12045.9592810203. The cubic root of 145105135 is about 525.4857303575.

Adding to 145105135 its reverse (531501541), we get a palindrome (676606676).

The spelling of 145105135 in words is "one hundred forty-five million, one hundred five thousand, one hundred thirty-five".

Divisors: 1 5 7 35 4145861 20729305 29021027 145105135