140206236 has 12 divisors (see below), whose sum is σ = 327147912. Its totient is φ = 46735408.

The previous prime is 140206223. The next prime is 140206267. The reversal of 140206236 is 632602041.

140206236 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×140206236² = 39315577226575392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5841915 + ... + 5841938.

It is an arithmetic number, because the mean of its divisors is an integer number (27262326).

Almost surely, 2^140206236 is an apocalyptic number.

It is an amenable number.

140206236 is an abundant number, since it is smaller than the sum of its proper divisors (186941676).

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

140206236 is a wasteful number, since it uses less digits than its factorization.

140206236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11683860 (or 11683858 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 140206236 is about 11840.8714206345. The cubic root of 140206236 is about 519.5042563282.

Adding to 140206236 its reverse (632602041), we get a palindrome (772808277).

The spelling of 140206236 in words is "one hundred forty million, two hundred six thousand, two hundred thirty-six".