140729066 has 4 divisors (see below), whose sum is σ = 211093602. Its totient is φ = 70364532.

The previous prime is 140729053. The next prime is 140729089. The reversal of 140729066 is 660927041.

140729066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 82283041 + 58446025 = 9071^2 + 7645^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35182265 + ... + 35182268.

Almost surely, 2^140729066 is an apocalyptic number.

140729066 is a deficient number, since it is larger than the sum of its proper divisors (70364536).

140729066 is an equidigital number, since it uses as much as digits as its factorization.

140729066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70364535.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 140729066 is about 11862.9282219863. The cubic root of 140729066 is about 520.1492002835.

The spelling of 140729066 in words is "one hundred forty million, seven hundred twenty-nine thousand, sixty-six".