102044340 has 96 divisors (see below), whose sum is σ = 320785920. Its totient is φ = 26928000.

The previous prime is 102044339. The next prime is 102044347. The reversal of 102044340 is 43440201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102044347) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 53605 + ... + 55475.

It is an arithmetic number, because the mean of its divisors is an integer number (3341520).

Almost surely, 2^102044340 is an apocalyptic number.

102044340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102044340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160392960).

102044340 is an abundant number, since it is smaller than the sum of its proper divisors (218741580).

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

102044340 is a wasteful number, since it uses less digits than its factorization.

102044340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990 (or 1982 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 102044340 is about 10101.6998569548. The cubic root of 102044340 is about 467.3005659870.

Adding to 102044340 its reverse (43440201), we get a palindrome (145484541).

The spelling of 102044340 in words is "one hundred two million, forty-four thousand, three hundred forty".