205424132 has 24 divisors (see below), whose sum is σ = 375680256. Its totient is φ = 98100288.

The previous prime is 205424083. The next prime is 205424137. The reversal of 205424132 is 231424502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 205424098 and 205424107.

It is not an unprimeable number, because it can be changed into a prime (205424137) 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 7 ways as a sum of consecutive naturals, for example, 85013 + ... + 87395.

It is an arithmetic number, because the mean of its divisors is an integer number (15653344).

Almost surely, 2^205424132 is an apocalyptic number.

It is an amenable number.

205424132 is a deficient number, since it is larger than the sum of its proper divisors (170256124).

205424132 is a wasteful number, since it uses less digits than its factorization.

205424132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347 (or 3345 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 205424132 is about 14332.6247421748. The cubic root of 205424132 is about 590.0432143010.

Adding to 205424132 its reverse (231424502), we get a palindrome (436848634).

The spelling of 205424132 in words is "two hundred five million, four hundred twenty-four thousand, one hundred thirty-two".