102012140 has 48 divisors (see below), whose sum is σ = 233301600. Its totient is φ = 37320192.

The previous prime is 102012133. The next prime is 102012179. The reversal of 102012140 is 41210201.

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, 6392 + ... + 15648.

It is an arithmetic number, because the mean of its divisors is an integer number (4860450).

Almost surely, 2^102012140 is an apocalyptic number.

102012140 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 102012140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116650800).

102012140 is an abundant number, since it is smaller than the sum of its proper divisors (131289460).

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

102012140 is a wasteful number, since it uses less digits than its factorization.

102012140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9314 (or 9312 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102012140 is about 10100.1059400385. The cubic root of 102012140 is about 467.2514087246.

Adding to 102012140 its reverse (41210201), we get a palindrome (143222341).

The spelling of 102012140 in words is "one hundred two million, twelve thousand, one hundred forty".