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40200401 = 173323197
BaseRepresentation
bin1001100101011…
…0100011010001
32210122101120202
42121112203101
540242403101
63553344545
7665461223
oct231264321
983571522
1040200401
112076817a
1211568155
138436b27
1454a6413
1537e136b
hex26568d1

40200401 has 4 divisors (see below), whose sum is σ = 40225332. Its totient is φ = 40175472.

The previous prime is 40200373. The next prime is 40200421. The reversal of 40200401 is 10400204.

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 6838225 + 33362176 = 2615^2 + 5776^2 .

It is a cyclic number.

It is not a de Polignac number, because 40200401 - 26 = 40200337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40200421) 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, 9866 + ... + 13331.

It is an arithmetic number, because the mean of its divisors is an integer number (10056333).

Almost surely, 240200401 is an apocalyptic number.

It is an amenable number.

40200401 is a deficient number, since it is larger than the sum of its proper divisors (24931).

40200401 is a wasteful number, since it uses less digits than its factorization.

40200401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24930.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 40200401 is about 6340.3786164550. The cubic root of 40200401 is about 342.5653729975.

Adding to 40200401 its reverse (10400204), we get a palindrome (50600605).

The spelling of 40200401 in words is "forty million, two hundred thousand, four hundred one".

Divisors: 1 1733 23197 40200401