240071261 has 2 divisors, whose sum is σ = 240071262. Its totient is φ = 240071260.

The previous prime is 240071257. The next prime is 240071269. The reversal of 240071261 is 162170042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240064036 + 7225 = 15494^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 240071261 - 2² = 240071257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240071269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120035630 + 120035631.

It is an arithmetic number, because the mean of its divisors is an integer number (120035631).

Almost surely, 2^240071261 is an apocalyptic number.

It is an amenable number.

240071261 is a deficient number, since it is larger than the sum of its proper divisors (1).

240071261 is an equidigital number, since it uses as much as digits as its factorization.

240071261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 240071261 is about 15494.2331530154. The cubic root of 240071261 is about 621.5080019086.

The spelling of 240071261 in words is "two hundred forty million, seventy-one thousand, two hundred sixty-one".