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4240181 = 11385471
BaseRepresentation
bin10000001011001100110101
321222102102202
4100023030311
52041141211
6230514245
751020021
oct20131465
97872382
104240181
112436790
121505985
13b55caa
147c5381
1558b53b
hex40b335

4240181 has 4 divisors (see below), whose sum is σ = 4625664. Its totient is φ = 3854700.

The previous prime is 4240169. The next prime is 4240183. The reversal of 4240181 is 1810424.

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 a de Polignac number, because none of the positive numbers 2k-4240181 is a prime.

It is a super-2 number, since 2×42401812 = 35958269825522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240183) 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, 192725 + ... + 192746.

It is an arithmetic number, because the mean of its divisors is an integer number (1156416).

Almost surely, 24240181 is an apocalyptic number.

It is an amenable number.

4240181 is a deficient number, since it is larger than the sum of its proper divisors (385483).

4240181 is a wasteful number, since it uses less digits than its factorization.

4240181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385482.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 4240181 is about 2059.1699784136. The cubic root of 4240181 is about 161.8557497618.

The spelling of 4240181 in words is "four million, two hundred forty thousand, one hundred eighty-one".

Divisors: 1 11 385471 4240181