140281250 has 42 divisors (see below), whose sum is σ = 267008301. Its totient is φ = 55275000.

The previous prime is 140281249. The next prime is 140281259. The reversal of 140281250 is 52182041.

It can be written as a sum of positive squares in 4 ways, for example, as 23921881 + 116359369 = 4891^2 + 10787^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8375.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140281259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 2093717 + ... + 2093783.

Almost surely, 2^140281250 is an apocalyptic number.

140281250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140281250 is a deficient number, since it is larger than the sum of its proper divisors (126727051).

140281250 is an frugal number, since it uses more digits than its factorization.

140281250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 140281250 is about 11844.0385848747. The cubic root of 140281250 is about 519.5968892606.

The spelling of 140281250 in words is "one hundred forty million, two hundred eighty-one thousand, two hundred fifty".