140206235 has 16 divisors (see below), whose sum is σ = 181621440. Its totient is φ = 103290240.

The previous prime is 140206223. The next prime is 140206267. The reversal of 140206235 is 532602041.

It is not a de Polignac number, because 140206235 - 2¹⁰ = 140205211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140206235.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27626 + ... + 32304.

It is an arithmetic number, because the mean of its divisors is an integer number (11351340).

Almost surely, 2^140206235 is an apocalyptic number.

140206235 is a deficient number, since it is larger than the sum of its proper divisors (41415205).

140206235 is a wasteful number, since it uses less digits than its factorization.

140206235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5158.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 140206235 is about 11840.8713784079. The cubic root of 140206235 is about 519.5042550931.

Adding to 140206235 its reverse (532602041), we get a palindrome (672808276).

The spelling of 140206235 in words is "one hundred forty million, two hundred six thousand, two hundred thirty-five".