102940205 has 8 divisors (see below), whose sum is σ = 124287072. Its totient is φ = 81846288.

The previous prime is 102940177. The next prime is 102940223. The reversal of 102940205 is 502049201.

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 102940205 - 2⁶ = 102940141 is a prime.

It is a super-4 number, since 4×102940205⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent 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, 62339 + ... + 63968.

It is an arithmetic number, because the mean of its divisors is an integer number (15535884).

Almost surely, 2^102940205 is an apocalyptic number.

It is an amenable number.

102940205 is a deficient number, since it is larger than the sum of its proper divisors (21346867).

102940205 is a wasteful number, since it uses less digits than its factorization.

102940205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126475.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 102940205 is about 10145.9452492116. The cubic root of 102940205 is about 468.6640878402.

Adding to 102940205 its reverse (502049201), we get a palindrome (604989406).

The spelling of 102940205 in words is "one hundred two million, nine hundred forty thousand, two hundred five".