140156218 has 4 divisors (see below), whose sum is σ = 210234330. Its totient is φ = 70078108.

The previous prime is 140156189. The next prime is 140156231. The reversal of 140156218 is 812651041.

140156218 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., 97476129 + 42680089 = 9873^2 + 6533^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35039053 + ... + 35039056.

Almost surely, 2^140156218 is an apocalyptic number.

140156218 is a deficient number, since it is larger than the sum of its proper divisors (70078112).

140156218 is an equidigital number, since it uses as much as digits as its factorization.

140156218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70078111.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 140156218 is about 11838.7591410587. The cubic root of 140156218 is about 519.4424719758.

The spelling of 140156218 in words is "one hundred forty million, one hundred fifty-six thousand, two hundred eighteen".