140500218 has 16 divisors (see below), whose sum is σ = 281189376. Its totient is φ = 46801920.

The previous prime is 140500207. The next prime is 140500271. The reversal of 140500218 is 812005041.

It is a super-2 number, since 2×140500218² = 39480622516095048, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140500194 and 140500203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2938 + ... + 17018.

It is an arithmetic number, because the mean of its divisors is an integer number (17574336).

Almost surely, 2^140500218 is an apocalyptic number.

140500218 is an abundant number, since it is smaller than the sum of its proper divisors (140689158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140500218 is a wasteful number, since it uses less digits than its factorization.

140500218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15749.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 140500218 is about 11853.2787869011. The cubic root of 140500218 is about 519.8670986790.

Adding to 140500218 its reverse (812005041), we get a palindrome (952505259).

The spelling of 140500218 in words is "one hundred forty million, five hundred thousand, two hundred eighteen".