204642207 has 48 divisors (see below), whose sum is σ = 382217472. Its totient is φ = 106297920.

The previous prime is 204642197. The next prime is 204642211. The reversal of 204642207 is 702246402.

It is a happy number.

It is not a de Polignac number, because 204642207 - 2¹¹ = 204640159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204642307) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13243 + ... + 24179.

It is an arithmetic number, because the mean of its divisors is an integer number (7962864).

Almost surely, 2^204642207 is an apocalyptic number.

204642207 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

204642207 is a deficient number, since it is larger than the sum of its proper divisors (177575265).

204642207 is a wasteful number, since it uses less digits than its factorization.

204642207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10970 (or 10958 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 204642207 is about 14305.3209331353. The cubic root of 204642207 is about 589.2936169330.

Adding to 204642207 its reverse (702246402), we get a palindrome (906888609).

It can be divided in two parts, 2046 and 42207, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 204642207 in words is "two hundred four million, six hundred forty-two thousand, two hundred seven".