102087140 has 12 divisors (see below), whose sum is σ = 214383036. Its totient is φ = 40834848.

The previous prime is 102087131. The next prime is 102087151. The reversal of 102087140 is 41780201.

It can be written as a sum of positive squares in 2 ways, for example, as 62220544 + 39866596 = 7888^2 + 6314^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2552159 + ... + 2552198.

It is an arithmetic number, because the mean of its divisors is an integer number (17865253).

Almost surely, 2^102087140 is an apocalyptic number.

102087140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102087140 is an abundant number, since it is smaller than the sum of its proper divisors (112295896).

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

102087140 is a wasteful number, since it uses less digits than its factorization.

102087140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104366 (or 5104364 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 102087140 is about 10103.8180902073. The cubic root of 102087140 is about 467.3658894488.

The spelling of 102087140 in words is "one hundred two million, eighty-seven thousand, one hundred forty".