140223245 has 8 divisors (see below), whose sum is σ = 168351480. Its totient is φ = 112122880.

The previous prime is 140223241. The next prime is 140223257. The reversal of 140223245 is 542322041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 487204 + 139736041 = 698^2 + 11821^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140223245 - 2² = 140223241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140223245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140223241) 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, 6461 + ... + 17949.

It is an arithmetic number, because the mean of its divisors is an integer number (21043935).

Almost surely, 2^140223245 is an apocalyptic number.

It is an amenable number.

140223245 is a deficient number, since it is larger than the sum of its proper divisors (28128235).

140223245 is a wasteful number, since it uses less digits than its factorization.

140223245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13935.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 140223245 is about 11841.5896314642. The cubic root of 140223245 is about 519.5252632174.

Adding to 140223245 its reverse (542322041), we get a palindrome (682545286).

The spelling of 140223245 in words is "one hundred forty million, two hundred twenty-three thousand, two hundred forty-five".