140135210 has 16 divisors (see below), whose sum is σ = 252498600. Its totient is φ = 55997376.

The previous prime is 140135209. The next prime is 140135227. The reversal of 140135210 is 12531041.

It can be written as a sum of positive squares in 4 ways, for example, as 103205281 + 36929929 = 10159^2 + 6077^2 .

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, 4136 + ... + 17244.

Almost surely, 2^140135210 is an apocalyptic number.

140135210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140135210 is a deficient number, since it is larger than the sum of its proper divisors (112363390).

140135210 is a wasteful number, since it uses less digits than its factorization.

140135210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14185.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 140135210 is about 11837.8718526600. The cubic root of 140135210 is about 519.4165176208.

Adding to 140135210 its reverse (12531041), we get a palindrome (152666251).

The spelling of 140135210 in words is "one hundred forty million, one hundred thirty-five thousand, two hundred ten".