40205201 has 4 divisors (see below), whose sum is σ = 40217892. Its totient is φ = 40192512.

The previous prime is 40205189. The next prime is 40205203. The reversal of 40205201 is 10250204.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33651601 + 6553600 = 5801^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 40205201 - 2¹⁴ = 40188817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40205203) 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, 2825 + ... + 9401.

It is an arithmetic number, because the mean of its divisors is an integer number (10054473).

Almost surely, 2^40205201 is an apocalyptic number.

It is an amenable number.

40205201 is a deficient number, since it is larger than the sum of its proper divisors (12691).

40205201 is an equidigital number, since it uses as much as digits as its factorization.

40205201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12690.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 40205201 is about 6340.7571314473. The cubic root of 40205201 is about 342.5790067616.

Adding to 40205201 its reverse (10250204), we get a palindrome (50455405).

The spelling of 40205201 in words is "forty million, two hundred five thousand, two hundred one".