140066212 has 72 divisors (see below), whose sum is σ = 294203448. Its totient is φ = 57953280.

The previous prime is 140066207. The next prime is 140066219. The reversal of 140066212 is 212660041.

It can be written as a sum of positive squares in 4 ways, for example, as 5134756 + 134931456 = 2266^2 + 11616^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140066219) 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 23 ways as a sum of consecutive naturals, for example, 710898 + ... + 711094.

It is an arithmetic number, because the mean of its divisors is an integer number (4086159).

Almost surely, 2^140066212 is an apocalyptic number.

It is an amenable number.

140066212 is an abundant number, since it is smaller than the sum of its proper divisors (154137236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140066212 is a wasteful number, since it uses less digits than its factorization.

140066212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 140066212 is about 11834.9572031334. The cubic root of 140066212 is about 519.3312557169.

The spelling of 140066212 in words is "one hundred forty million, sixty-six thousand, two hundred twelve".