140442212 has 12 divisors (see below), whose sum is σ = 246347136. Its totient is φ = 70057320.

The previous prime is 140442149. The next prime is 140442221. The reversal of 140442212 is 212244041.

It is a super-2 number, since 2×140442212² = 39448029822905888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39008 + ... + 42455.

It is an arithmetic number, because the mean of its divisors is an integer number (20528928).

Almost surely, 2^140442212 is an apocalyptic number.

It is an amenable number.

140442212 is a deficient number, since it is larger than the sum of its proper divisors (105904924).

140442212 is a wasteful number, since it uses less digits than its factorization.

140442212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81898 (or 81896 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 140442212 is about 11850.8317007710. The cubic root of 140442212 is about 519.7955458558.

Adding to 140442212 its reverse (212244041), we get a palindrome (352686253).

The spelling of 140442212 in words is "one hundred forty million, four hundred forty-two thousand, two hundred twelve".