102342221 has 8 divisors (see below), whose sum is σ = 103169664. Its totient is φ = 101518560.

The previous prime is 102342217. The next prime is 102342223. The reversal of 102342221 is 122243201.

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 102342221 - 2² = 102342217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102342221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102342223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76460 + ... + 77786.

It is an arithmetic number, because the mean of its divisors is an integer number (12896208).

Almost surely, 2^102342221 is an apocalyptic number.

It is an amenable number.

102342221 is a deficient number, since it is larger than the sum of its proper divisors (827443).

102342221 is a wasteful number, since it uses less digits than its factorization.

102342221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 102342221 is about 10116.4332153185. The cubic root of 102342221 is about 467.7548284230.

Adding to 102342221 its reverse (122243201), we get a palindrome (224585422).

The spelling of 102342221 in words is "one hundred two million, three hundred forty-two thousand, two hundred twenty-one".