102243042321 has 32 divisors (see below), whose sum is σ = 161216828160. Its totient is φ = 56394019584.

The previous prime is 102243042311. The next prime is 102243042331. The reversal of 102243042321 is 123240342201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102243042311) and next prime (102243042331).

It is not a de Polignac number, because 102243042321 - 2¹⁰ = 102243041297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102243042291 and 102243042300.

It is not an unprimeable number, because it can be changed into a prime (102243042311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2324691 + ... + 2368263.

It is an arithmetic number, because the mean of its divisors is an integer number (5038025880).

Almost surely, 2^102243042321 is an apocalyptic number.

It is an amenable number.

102243042321 is a deficient number, since it is larger than the sum of its proper divisors (58973785839).

102243042321 is a wasteful number, since it uses less digits than its factorization.

102243042321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47465.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 102243042321 its reverse (123240342201), we get a palindrome (225483384522).

The spelling of 102243042321 in words is "one hundred two billion, two hundred forty-three million, forty-two thousand, three hundred twenty-one".