102441440 has 24 divisors (see below), whose sum is σ = 242018280. Its totient is φ = 40976512.

The previous prime is 102441377. The next prime is 102441461. The reversal of 102441440 is 44144201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319970 + ... + 320289.

It is an arithmetic number, because the mean of its divisors is an integer number (10084095).

Almost surely, 2^102441440 is an apocalyptic number.

102441440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102441440 is an abundant number, since it is smaller than the sum of its proper divisors (139576840).

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

102441440 is an equidigital number, since it uses as much as digits as its factorization.

102441440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640274 (or 640266 counting only the distinct ones).

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

The square root of 102441440 is about 10121.3358802087. The cubic root of 102441440 is about 467.9059396522.

Adding to 102441440 its reverse (44144201), we get a palindrome (146585641).

The spelling of 102441440 in words is "one hundred two million, four hundred forty-one thousand, four hundred forty".