140650261 has 4 divisors (see below), whose sum is σ = 145500300. Its totient is φ = 135800224.

The previous prime is 140650249. The next prime is 140650271. The reversal of 140650261 is 162056041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50495236 + 90155025 = 7106^2 + 9495^2 .

It is a cyclic number.

It is not a de Polignac number, because 140650261 - 2⁵ = 140650229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140650271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2424976 + ... + 2425033.

It is an arithmetic number, because the mean of its divisors is an integer number (36375075).

Almost surely, 2^140650261 is an apocalyptic number.

It is an amenable number.

140650261 is a deficient number, since it is larger than the sum of its proper divisors (4850039).

140650261 is an equidigital number, since it uses as much as digits as its factorization.

140650261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850038.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 140650261 is about 11859.6062750835. The cubic root of 140650261 is about 520.0520916750.

The spelling of 140650261 in words is "one hundred forty million, six hundred fifty thousand, two hundred sixty-one".