205421202 has 48 divisors (see below), whose sum is σ = 509820480. Its totient is φ = 58558176.

The previous prime is 205421201. The next prime is 205421207. The reversal of 205421202 is 202124502.

205421202 is a `hidden beast` number, since 2 + 0 + 542 + 120 + 2 = 666.

It is a super-2 number, since 2×205421202² = 84395740462249608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (205421201) 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, 62533 + ... + 65735.

It is an arithmetic number, because the mean of its divisors is an integer number (10621260).

Almost surely, 2^205421202 is an apocalyptic number.

205421202 is an abundant number, since it is smaller than the sum of its proper divisors (304399278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205421202 is a wasteful number, since it uses less digits than its factorization.

205421202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727 (or 3724 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 205421202 is about 14332.5225274548. The cubic root of 205421202 is about 590.0404089914.

Adding to 205421202 its reverse (202124502), we get a palindrome (407545704).

The spelling of 205421202 in words is "two hundred five million, four hundred twenty-one thousand, two hundred two".