402040211 has 4 divisors (see below), whose sum is σ = 402138072. Its totient is φ = 401942352.

The previous prime is 402040201. The next prime is 402040229. The reversal of 402040211 is 112040204.

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

It is a cyclic number.

It is not a de Polignac number, because 402040211 - 2¹⁴ = 402023827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402040201) 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, 42485 + ... + 51078.

It is an arithmetic number, because the mean of its divisors is an integer number (100534518).

Almost surely, 2^402040211 is an apocalyptic number.

402040211 is a deficient number, since it is larger than the sum of its proper divisors (97861).

402040211 is an equidigital number, since it uses as much as digits as its factorization.

402040211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97860.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 402040211 is about 20050.9404018864. The cubic root of 402040211 is about 738.0568761966.

Adding to 402040211 its reverse (112040204), we get a palindrome (514080415).

The spelling of 402040211 in words is "four hundred two million, forty thousand, two hundred eleven".