140243234 has 8 divisors (see below), whose sum is σ = 222739308. Its totient is φ = 65996800.

The previous prime is 140243227. The next prime is 140243239. The reversal of 140243234 is 432342041.

It can be written as a sum of positive squares in 2 ways, for example, as 132319009 + 7924225 = 11503^2 + 2815^2 .

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

It is not an unprimeable number, because it can be changed into a prime (140243239) 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 3 ways as a sum of consecutive naturals, for example, 2062367 + ... + 2062434.

Almost surely, 2^140243234 is an apocalyptic number.

140243234 is a deficient number, since it is larger than the sum of its proper divisors (82496074).

140243234 is a wasteful number, since it uses less digits than its factorization.

140243234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124820.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 140243234 is about 11842.4336181378. The cubic root of 140243234 is about 519.5499483711.

Adding to 140243234 its reverse (432342041), we get a palindrome (572585275).

The spelling of 140243234 in words is "one hundred forty million, two hundred forty-three thousand, two hundred thirty-four".