140285290 has 16 divisors (see below), whose sum is σ = 253074312. Its totient is φ = 55989504.

The previous prime is 140285287. The next prime is 140285291. The reversal of 140285290 is 92582041.

It can be written as a sum of positive squares in 4 ways, for example, as 107806689 + 32478601 = 10383^2 + 5699^2 .

It is not an unprimeable number, because it can be changed into a prime (140285291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10779 + ... + 19918.

Almost surely, 2^140285290 is an apocalyptic number.

140285290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140285290 is a deficient number, since it is larger than the sum of its proper divisors (112789022).

140285290 is a wasteful number, since it uses less digits than its factorization.

140285290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31161.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 140285290 is about 11844.2091335808. The cubic root of 140285290 is about 519.6018772194.

The spelling of 140285290 in words is "one hundred forty million, two hundred eighty-five thousand, two hundred ninety".