102505401140 has 24 divisors (see below), whose sum is σ = 215446482720. Its totient is φ = 40966895648.

The previous prime is 102505401137. The next prime is 102505401241. The reversal of 102505401140 is 41104505201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2180210 + ... + 2226729.

It is an arithmetic number, because the mean of its divisors is an integer number (8976936780).

Almost surely, 2^102505401140 is an apocalyptic number.

102505401140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102505401140 is an abundant number, since it is smaller than the sum of its proper divisors (112941081580).

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

102505401140 is a wasteful number, since it uses less digits than its factorization.

102505401140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408111 (or 4408109 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 102505401140 its reverse (41104505201), we get a palindrome (143609906341).

The spelling of 102505401140 in words is "one hundred two billion, five hundred five million, four hundred one thousand, one hundred forty".