140212249 has 2 divisors, whose sum is σ = 140212250. Its totient is φ = 140212248.

The previous prime is 140212217. The next prime is 140212279. The reversal of 140212249 is 942212041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139712400 + 499849 = 11820^2 + 707^2 .

It is a cyclic number.

It is not a de Polignac number, because 140212249 - 2⁵ = 140212217 is a prime.

It is not a weakly prime, because it can be changed into another prime (140212279) 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 as a sum of consecutive naturals, namely, 70106124 + 70106125.

It is an arithmetic number, because the mean of its divisors is an integer number (70106125).

Almost surely, 2^140212249 is an apocalyptic number.

It is an amenable number.

140212249 is a deficient number, since it is larger than the sum of its proper divisors (1).

140212249 is an equidigital number, since it uses as much as digits as its factorization.

140212249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 140212249 is about 11841.1253265895. The cubic root of 140212249 is about 519.5116828510.

The spelling of 140212249 in words is "one hundred forty million, two hundred twelve thousand, two hundred forty-nine".