140423236 has 6 divisors (see below), whose sum is σ = 245740670. Its totient is φ = 70211616.

The previous prime is 140423207. The next prime is 140423317. The reversal of 140423236 is 632324041.

It can be written as a sum of positive squares in only one way, i.e., 121881600 + 18541636 = 11040^2 + 4306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140423236.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17552901 + ... + 17552908.

Almost surely, 2^140423236 is an apocalyptic number.

It is an amenable number.

140423236 is a deficient number, since it is larger than the sum of its proper divisors (105317434).

140423236 is a wasteful number, since it uses less digits than its factorization.

140423236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35105813 (or 35105811 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 140423236 is about 11850.0310548116. The cubic root of 140423236 is about 519.7721338905.

Adding to 140423236 its reverse (632324041), we get a palindrome (772747277).

The spelling of 140423236 in words is "one hundred forty million, four hundred twenty-three thousand, two hundred thirty-six".