140145212 has 24 divisors (see below), whose sum is σ = 262370304. Its totient is φ = 65267712.

The previous prime is 140145191. The next prime is 140145217. The reversal of 140145212 is 212541041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140145217) 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, 4028 + ... + 17219.

It is an arithmetic number, because the mean of its divisors is an integer number (10932096).

Almost surely, 2^140145212 is an apocalyptic number.

It is an amenable number.

140145212 is a deficient number, since it is larger than the sum of its proper divisors (122225092).

140145212 is a wasteful number, since it uses less digits than its factorization.

140145212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21365 (or 21363 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 140145212 is about 11838.2943028124. The cubic root of 140145212 is about 519.4288749254.

Adding to 140145212 its reverse (212541041), we get a palindrome (352686253).

The spelling of 140145212 in words is "one hundred forty million, one hundred forty-five thousand, two hundred twelve".