140113261 has 2 divisors, whose sum is σ = 140113262. Its totient is φ = 140113260.

The previous prime is 140113249. The next prime is 140113271. The reversal of 140113261 is 162311041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136188900 + 3924361 = 11670^2 + 1981^2 .

It is a cyclic number.

It is not a de Polignac number, because 140113261 - 2⁵ = 140113229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140113231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70056630 + 70056631.

It is an arithmetic number, because the mean of its divisors is an integer number (70056631).

Almost surely, 2^140113261 is an apocalyptic number.

It is an amenable number.

140113261 is a deficient number, since it is larger than the sum of its proper divisors (1).

140113261 is an equidigital number, since it uses as much as digits as its factorization.

140113261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 140113261 is about 11836.9447493853. The cubic root of 140113261 is about 519.3893979355.

The spelling of 140113261 in words is "one hundred forty million, one hundred thirteen thousand, two hundred sixty-one".