102204745 has 8 divisors (see below), whose sum is σ = 124326216. Its totient is φ = 80643456.

The previous prime is 102204733. The next prime is 102204757. The reversal of 102204745 is 547402201.

It is an interprime number because it is at equal distance from previous prime (102204733) and next prime (102204757).

It can be written as a sum of positive squares in 4 ways, for example, as 9217296 + 92987449 = 3036^2 + 9643^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102204745 - 2⁹ = 102204233 is a prime.

It is a Duffinian number.

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, 139642 + ... + 140371.

It is an arithmetic number, because the mean of its divisors is an integer number (15540777).

Almost surely, 2^102204745 is an apocalyptic number.

It is an amenable number.

102204745 is a deficient number, since it is larger than the sum of its proper divisors (22121471).

102204745 is an equidigital number, since it uses as much as digits as its factorization.

102204745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280091.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 102204745 is about 10109.6362446925. The cubic root of 102204745 is about 467.5452900159.

Adding to 102204745 its reverse (547402201), we get a palindrome (649606946).

The spelling of 102204745 in words is "one hundred two million, two hundred four thousand, seven hundred forty-five".