102223424242 has 4 divisors (see below), whose sum is σ = 153335136366. Its totient is φ = 51111712120.

The previous prime is 102223424239. The next prime is 102223424257. The reversal of 102223424242 is 242424322201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 88989452721 + 13233971521 = 298311^2 + 115039^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102223424242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555856059 + ... + 25555856062.

Almost surely, 2^102223424242 is an apocalyptic number.

102223424242 is a deficient number, since it is larger than the sum of its proper divisors (51111712124).

102223424242 is an equidigital number, since it uses as much as digits as its factorization.

102223424242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51111712123.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 102223424242 its reverse (242424322201), we get a palindrome (344647746443).

The spelling of 102223424242 in words is "one hundred two billion, two hundred twenty-three million, four hundred twenty-four thousand, two hundred forty-two".