102442142 has 16 divisors (see below), whose sum is σ = 168642432. Its totient is φ = 46284120.

The previous prime is 102442127. The next prime is 102442147. The reversal of 102442142 is 241244201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102442147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10268 + ... + 17615.

It is an arithmetic number, because the mean of its divisors is an integer number (10540152).

Almost surely, 2^102442142 is an apocalyptic number.

102442142 is a deficient number, since it is larger than the sum of its proper divisors (66200290).

102442142 is a wasteful number, since it uses less digits than its factorization.

102442142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28063.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 102442142 is about 10121.3705593660. The cubic root of 102442142 is about 467.9070084554.

Adding to 102442142 its reverse (241244201), we get a palindrome (343686343).

It can be divided in two parts, 102 and 442142, that added together give a palindrome (442244).

The spelling of 102442142 in words is "one hundred two million, four hundred forty-two thousand, one hundred forty-two".