140610961 has 8 divisors (see below), whose sum is σ = 151692264. Its totient is φ = 129841920.

The previous prime is 140610941. The next prime is 140610973. The reversal of 140610961 is 169016041.

It can be written as a sum of positive squares in 4 ways, for example, as 103632400 + 36978561 = 10180^2 + 6081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140610961 - 2¹⁹ = 140086673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140610901) 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 7 ways as a sum of consecutive naturals, for example, 77130 + ... + 78931.

It is an arithmetic number, because the mean of its divisors is an integer number (18961533).

Almost surely, 2^140610961 is an apocalyptic number.

It is an amenable number.

140610961 is a deficient number, since it is larger than the sum of its proper divisors (11081303).

140610961 is a wasteful number, since it uses less digits than its factorization.

140610961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156131.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 140610961 is about 11857.9492746427. The cubic root of 140610961 is about 520.0036501223.

The spelling of 140610961 in words is "one hundred forty million, six hundred ten thousand, nine hundred sixty-one".