205402461 has 24 divisors (see below), whose sum is σ = 302027040. Its totient is φ = 124074720.

The previous prime is 205402459. The next prime is 205402469. The reversal of 205402461 is 164204502.

It is not a de Polignac number, because 205402461 - 2¹ = 205402459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205402469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136831 + ... + 138323.

It is an arithmetic number, because the mean of its divisors is an integer number (12584460).

Almost surely, 2^205402461 is an apocalyptic number.

It is an amenable number.

205402461 is a deficient number, since it is larger than the sum of its proper divisors (96624579).

205402461 is a wasteful number, since it uses less digits than its factorization.

205402461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897 (or 1886 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 205402461 is about 14331.8687197448. The cubic root of 205402461 is about 590.0224649112.

Adding to 205402461 its reverse (164204502), we get a palindrome (369606963).

The spelling of 205402461 in words is "two hundred five million, four hundred two thousand, four hundred sixty-one".