102642488 has 72 divisors (see below), whose sum is σ = 218062800. Its totient is φ = 45264960.

The previous prime is 102642451. The next prime is 102642497. The reversal of 102642488 is 884246201.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 1299233 + ... + 1299311.

It is an arithmetic number, because the mean of its divisors is an integer number (3028650).

Almost surely, 2^102642488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102642488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109031400).

102642488 is an abundant number, since it is smaller than the sum of its proper divisors (115420312).

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

102642488 is a wasteful number, since it uses less digits than its factorization.

102642488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 102642488 is about 10131.2629025211. The cubic root of 102642488 is about 468.2118382542.

Adding to 102642488 its reverse (884246201), we get a palindrome (986888689).

The spelling of 102642488 in words is "one hundred two million, six hundred forty-two thousand, four hundred eighty-eight".