140422661 has 2 divisors, whose sum is σ = 140422662. Its totient is φ = 140422660.

The previous prime is 140422651. The next prime is 140422679. The reversal of 140422661 is 166224041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114361636 + 26061025 = 10694^2 + 5105^2 .

It is a cyclic number.

It is not a de Polignac number, because 140422661 - 2²⁶ = 73313797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140422661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140422621) by changing a digit.

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 as a sum of consecutive naturals, namely, 70211330 + 70211331.

It is an arithmetic number, because the mean of its divisors is an integer number (70211331).

Almost surely, 2^140422661 is an apocalyptic number.

It is an amenable number.

140422661 is a deficient number, since it is larger than the sum of its proper divisors (1).

140422661 is an equidigital number, since it uses as much as digits as its factorization.

140422661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 140422661 is about 11850.0067932470. The cubic root of 140422661 is about 519.7714244415.

The spelling of 140422661 in words is "one hundred forty million, four hundred twenty-two thousand, six hundred sixty-one".