140643332 has 24 divisors (see below), whose sum is σ = 250713792. Its totient is φ = 69020000.

The previous prime is 140643331. The next prime is 140643337. The reversal of 140643332 is 233346041.

It is a happy number.

140643332 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (140643331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70298 + ... + 72270.

It is an arithmetic number, because the mean of its divisors is an integer number (10446408).

Almost surely, 2^140643332 is an apocalyptic number.

It is an amenable number.

140643332 is a deficient number, since it is larger than the sum of its proper divisors (110070460).

140643332 is a wasteful number, since it uses less digits than its factorization.

140643332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 140643332 is about 11859.3141454302. The cubic root of 140643332 is about 520.0435515791.

Adding to 140643332 its reverse (233346041), we get a palindrome (373989373).

The spelling of 140643332 in words is "one hundred forty million, six hundred forty-three thousand, three hundred thirty-two".