102242121 has 8 divisors (see below), whose sum is σ = 138190560. Its totient is φ = 67227552.

The previous prime is 102242099. The next prime is 102242143. The reversal of 102242121 is 121242201.

It is an interprime number because it is at equal distance from previous prime (102242099) and next prime (102242143).

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

It is not a de Polignac number, because 102242121 - 2¹⁵ = 102209353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102242121.

It is not an unprimeable number, because it can be changed into a prime (102246121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233211 + ... + 233648.

It is an arithmetic number, because the mean of its divisors is an integer number (17273820).

Almost surely, 2^102242121 is an apocalyptic number.

It is an amenable number.

102242121 is a deficient number, since it is larger than the sum of its proper divisors (35948439).

102242121 is an equidigital number, since it uses as much as digits as its factorization.

102242121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466935.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 102242121 is about 10111.4846090967. The cubic root of 102242121 is about 467.6022764210.

Adding to 102242121 its reverse (121242201), we get a palindrome (223484322).

The spelling of 102242121 in words is "one hundred two million, two hundred forty-two thousand, one hundred twenty-one".