102042243228 has 12 divisors (see below), whose sum is σ = 238098567560. Its totient is φ = 34014081072.

The previous prime is 102042243227. The next prime is 102042243263. The reversal of 102042243228 is 822342240201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 102042243195 and 102042243204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102042243223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4251760123 + ... + 4251760146.

Almost surely, 2^102042243228 is an apocalyptic number.

It is an amenable number.

102042243228 is an abundant number, since it is smaller than the sum of its proper divisors (136056324332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102042243228 is a wasteful number, since it uses less digits than its factorization.

102042243228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8503520276 (or 8503520274 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 102042243228 its reverse (822342240201), we get a palindrome (924384483429).

The spelling of 102042243228 in words is "one hundred two billion, forty-two million, two hundred forty-three thousand, two hundred twenty-eight".