140205213 has 12 divisors (see below), whose sum is σ = 202647900. Its totient is φ = 93410496.

The previous prime is 140205211. The next prime is 140205223. The reversal of 140205213 is 312502041.

140205213 is a `hidden beast` number, since 140 + 2 + 0 + 521 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59259204 + 80946009 = 7698^2 + 8997^2 .

It is not a de Polignac number, because 140205213 - 2¹ = 140205211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140205211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13545 + ... + 21537.

It is an arithmetic number, because the mean of its divisors is an integer number (16887325).

Almost surely, 2^140205213 is an apocalyptic number.

It is an amenable number.

140205213 is a deficient number, since it is larger than the sum of its proper divisors (62442687).

140205213 is a wasteful number, since it uses less digits than its factorization.

140205213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9948 (or 9945 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 140205213 is about 11840.8282227216. The cubic root of 140205213 is about 519.5029928225.

Adding to 140205213 its reverse (312502041), we get a palindrome (452707254).

The spelling of 140205213 in words is "one hundred forty million, two hundred five thousand, two hundred thirteen".