402040205 has 8 divisors (see below), whose sum is σ = 551369472. Its totient is φ = 275684688.

The previous prime is 402040201. The next prime is 402040229. The reversal of 402040205 is 502040204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402040205 - 2² = 402040201 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 5743397 + ... + 5743466.

It is an arithmetic number, because the mean of its divisors is an integer number (68921184).

Almost surely, 2^402040205 is an apocalyptic number.

It is an amenable number.

402040205 is a deficient number, since it is larger than the sum of its proper divisors (149329267).

402040205 is a wasteful number, since it uses less digits than its factorization.

402040205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11486875.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 402040205 is about 20050.9402522675. The cubic root of 402040205 is about 738.0568725251.

Adding to 402040205 its reverse (502040204), we get a palindrome (904080409).

Subtracting 402040205 from its reverse (502040204), we obtain a palindrome (99999999).

The spelling of 402040205 in words is "four hundred two million, forty thousand, two hundred five".