204002401 has 4 divisors (see below), whose sum is σ = 204144832. Its totient is φ = 203859972.

The previous prime is 204002399. The next prime is 204002473. The reversal of 204002401 is 104200402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204002401 - 2¹ = 204002399 is a prime.

It is a super-2 number, since 2×204002401² = 83233959227529602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204008401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69045 + ... + 71938.

It is an arithmetic number, because the mean of its divisors is an integer number (51036208).

Almost surely, 2^204002401 is an apocalyptic number.

It is an amenable number.

204002401 is a deficient number, since it is larger than the sum of its proper divisors (142431).

204002401 is a wasteful number, since it uses less digits than its factorization.

204002401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142430.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 204002401 is about 14282.9409086504. The cubic root of 204002401 is about 588.6788411766.

Adding to 204002401 its reverse (104200402), we get a palindrome (308202803).

It can be divided in two parts, 20400 and 2401, that added together give a square (22801 = 151²).

The spelling of 204002401 in words is "two hundred four million, two thousand, four hundred one".