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40405201 = 70956989
BaseRepresentation
bin1001101000100…
…0100011010001
32211000210111221
42122020203101
540320431301
64002005041
71000303264
oct232104321
984023457
1040405201
1120898031
1211646781
1384a9105
14551acdb
153831da1
hex26888d1

40405201 has 4 divisors (see below), whose sum is σ = 40462900. Its totient is φ = 40347504.

The previous prime is 40405187. The next prime is 40405217. The reversal of 40405201 is 10250404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20611600 + 19793601 = 4540^2 + 4449^2 .

It is a cyclic number.

It is not a de Polignac number, because 40405201 - 213 = 40397009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40405231) 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, 27786 + ... + 29203.

It is an arithmetic number, because the mean of its divisors is an integer number (10115725).

Almost surely, 240405201 is an apocalyptic number.

It is an amenable number.

40405201 is a deficient number, since it is larger than the sum of its proper divisors (57699).

40405201 is an equidigital number, since it uses as much as digits as its factorization.

40405201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57698.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40405201 is about 6356.5085542301. The cubic root of 40405201 is about 343.1461183326.

Adding to 40405201 its reverse (10250404), we get a palindrome (50655605).

The spelling of 40405201 in words is "forty million, four hundred five thousand, two hundred one".

Divisors: 1 709 56989 40405201