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107149 = 715307
BaseRepresentation
bin11010001010001101
312102222111
4122022031
511412044
62144021
7624250
oct321215
9172874
10107149
1173559
1252011
1339a03
142b097
1521b34
hex1a28d

107149 has 4 divisors (see below), whose sum is σ = 122464. Its totient is φ = 91836.

The previous prime is 107137. The next prime is 107171. The reversal of 107149 is 941701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 107149 - 27 = 107021 is a prime.

It is a super-2 number, since 2×1071492 = 22961816402, which contains 22 as substring.

It is a Duffinian number.

107149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7647 + ... + 7660.

It is an arithmetic number, because the mean of its divisors is an integer number (30616).

2107149 is an apocalyptic number.

It is an amenable number.

107149 is a deficient number, since it is larger than the sum of its proper divisors (15315).

107149 is an equidigital number, since it uses as much as digits as its factorization.

107149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15314.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 107149 is about 327.3362185888. The cubic root of 107149 is about 47.4966202581.

It can be divided in two parts, 107 and 149, that added together give a 8-th power (256 = 28).

The spelling of 107149 in words is "one hundred seven thousand, one hundred forty-nine".

Divisors: 1 7 15307 107149