205205402 has 16 divisors (see below), whose sum is σ = 340085952. Its totient is φ = 92368320.

The previous prime is 205205393. The next prime is 205205411. The reversal of 205205402 is 204502502.

205205402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (205205393) and next prime (205205411).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130424 + ... + 131987.

It is an arithmetic number, because the mean of its divisors is an integer number (21255372).

Almost surely, 2^205205402 is an apocalyptic number.

205205402 is a deficient number, since it is larger than the sum of its proper divisors (134880550).

205205402 is a wasteful number, since it uses less digits than its factorization.

205205402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262453.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 205205402 is about 14324.9922164028. The cubic root of 205205402 is about 589.8337193004.

Adding to 205205402 its reverse (204502502), we get a palindrome (409707904).

The spelling of 205205402 in words is "two hundred five million, two hundred five thousand, four hundred two".