140732261 has 2 divisors, whose sum is σ = 140732262. Its totient is φ = 140732260.

The previous prime is 140732257. The next prime is 140732303. The reversal of 140732261 is 162237041.

140732261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130530625 + 10201636 = 11425^2 + 3194^2 .

It is a cyclic number.

It is not a de Polignac number, because 140732261 - 2² = 140732257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140732261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140732231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70366130 + 70366131.

It is an arithmetic number, because the mean of its divisors is an integer number (70366131).

Almost surely, 2^140732261 is an apocalyptic number.

It is an amenable number.

140732261 is a deficient number, since it is larger than the sum of its proper divisors (1).

140732261 is an equidigital number, since it uses as much as digits as its factorization.

140732261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 140732261 is about 11863.0628844325. The cubic root of 140732261 is about 520.1531366040.

The spelling of 140732261 in words is "one hundred forty million, seven hundred thirty-two thousand, two hundred sixty-one".