102242123442 has 24 divisors (see below), whose sum is σ = 221550365244. Its totient is φ = 34076744064.

The previous prime is 102242123437. The next prime is 102242123471. The reversal of 102242123442 is 244321242201.

It is a happy number.

102242123442 is a `hidden beast` number, since 1 + 0 + 2 + 2 + 4 + 212 + 3 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 78406160121 + 23835963321 = 280011^2 + 154389^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169123 + ... + 482790.

Almost surely, 2^102242123442 is an apocalyptic number.

102242123442 is an abundant number, since it is smaller than the sum of its proper divisors (119308241802).

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

102242123442 is a wasteful number, since it uses less digits than its factorization.

102242123442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660634 (or 660631 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 102242123442 its reverse (244321242201), we get a palindrome (346563365643).

The spelling of 102242123442 in words is "one hundred two billion, two hundred forty-two million, one hundred twenty-three thousand, four hundred forty-two".