140420212 has 12 divisors (see below), whose sum is σ = 245849380. Its totient is φ = 70177536.

The previous prime is 140420191. The next prime is 140420219. The reversal of 140420212 is 212024041.

It can be written as a sum of positive squares in 2 ways, for example, as 55890576 + 84529636 = 7476^2 + 9194^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140420219) 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 3 ways as a sum of consecutive naturals, for example, 3364 + ... + 17092.

Almost surely, 2^140420212 is an apocalyptic number.

It is an amenable number.

140420212 is a deficient number, since it is larger than the sum of its proper divisors (105429168).

140420212 is a wasteful number, since it uses less digits than its factorization.

140420212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16290 (or 16288 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 140420212 is about 11849.9034595224. The cubic root of 140420212 is about 519.7684027839.

Adding to 140420212 its reverse (212024041), we get a palindrome (352444253).

The spelling of 140420212 in words is "one hundred forty million, four hundred twenty thousand, two hundred twelve".