102081140 has 96 divisors (see below), whose sum is σ = 259252224. Its totient is φ = 33022080.

The previous prime is 102081139. The next prime is 102081157. The reversal of 102081140 is 41180201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186347 + ... + 186893.

It is an arithmetic number, because the mean of its divisors is an integer number (2700544).

Almost surely, 2^102081140 is an apocalyptic number.

102081140 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 102081140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129626112).

102081140 is an abundant number, since it is smaller than the sum of its proper divisors (157171084).

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

102081140 is a wasteful number, since it uses less digits than its factorization.

102081140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 102081140 is about 10103.5211683848. The cubic root of 102081140 is about 467.3567330547.

The spelling of 102081140 in words is "one hundred two million, eighty-one thousand, one hundred forty".