102121443040 has 96 divisors (see below), whose sum is σ = 251531523936. Its totient is φ = 39145666560.

The previous prime is 102121442999. The next prime is 102121443071. The reversal of 102121443040 is 40344121201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224610 + ... + 504670.

It is an arithmetic number, because the mean of its divisors is an integer number (2620120041).

Almost surely, 2^102121443040 is an apocalyptic number.

102121443040 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 102121443040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125765761968).

102121443040 is an abundant number, since it is smaller than the sum of its proper divisors (149410080896).

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

102121443040 is a wasteful number, since it uses less digits than its factorization.

102121443040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280172 (or 280164 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 102121443040 its reverse (40344121201), we get a palindrome (142465564241).

The spelling of 102121443040 in words is "one hundred two billion, one hundred twenty-one million, four hundred forty-three thousand, forty".